Here's a breakdown of Microsoft's E3 2011 Press Conference..   
 
Previous Microsoft E3 Press Conferences: 

• 2005
  
• 2006
• 2007
• 2008
• 2009
• 2010

• Date: June 6, 2011
  
• Time: 9:30 am PDT
  
• Hosts: Don Mattrick
  
• Location: Galen Center (USC)
  

• Gamespot (1 video) - 88 mins 15 seconds (have to enter your birthday to watch video)
• G4 (1 video) - 89 mins 22 seconds

• STAGE DEMO: Modern Warfare 3
  
• Robert Bowling (who was playing Demo) and Glen Schofield talks to the crowd
  
• Don Mattrick takes the stage, Xbox had best year ever
  
• Daniel Neuburger and Darrell Gallagher take the stage, announce world premier of Tomb Raider
• STAGE DEMO: Tomb Raider
• Peter Moore takes the stage, announces 4 EA Sports games will have Kinect support ( Madden 12, FIFA 12, Tiger Woods 12)
  
• Dr Ray Muzyka takes the stage
• STAGE DEMO: Mass Effect 3 - shows Kinect support
• GAME TRAILER: Tom Clancy's Ghost Recon: Future Soldier
• Yves Guillemot takes the stage, shows for the first time Kinect Support for Ghost Recon
• STAGE DEMO: Ghost Recon: Future Soldier and it's Kinect Support (Gun Smith, Shooting Range)
• Marc Whitten takes the stage, shows new Xbox Experience, more partnerships and more content, controller-less controls and YouTube partnership announcement.
• Dana White takes the stage to announce partnership of UFC and Xbox Live.
• Phil Spencer takes the stage, everything shown from here on out is "only on Xbox 360"
• GAME TRAILER: Gears of War 3
• Cliffy B invites Ice T to the stage, shows mission on water fighting a huge sea monster.
  
• STAGE DEMO: Gears of War 3
• GAME TRAILER: Ryse
• GAME TRAILER: Halo: Combat Evolved Anniversary
• Dan Greenawalt takes the stage
• GAME TRAILER: Forza Motorsport 4 (to Kanye's "Power")
• Peter Molyneux takes the stage
• GAME TRAILER: Fable: The Journey
• STAGE DEMO: Fable: The Journey
• Phil Spencer retakes the stage, announces Minecraft is coming to Xbox and will be Kinect supported.  Announces partnership with Disney and Kinect.
• GAME TRAILER: Kinect Disneyland Adventures
  
• STAGE DEMO: Kinect Disneyland Adventures - Peter Pan's flight
  
• GAME TRAILER: Kinect Star Wars
• STAGE DEMO: Kinect Star Wars
• Tim Schafer takes the stage, talks about Sesame Street
• STAGE DEMO: Sesame Street Once Upon A Monster
• Kudo Tsunoda takes the stage, announcing Kinect Fun Labs
• STAGE DEMO: Kinect Me
• GAME TRAILER: Kinect Sports: Season 2
• STAGE DEMO: Kinect Sports: Season 2 - Golf, Football
• Kasson Crooker takes the stage, Dance Central 1 songs can be imported into Dance Central 2, announced simultaneous Co-Op Dancing
• STAGE DEMO: Dance Central 2
• Don Mattrick retakes the stage, Xbox 360 will become the global leader in console sales
• GAME TRAILER: Halo 4

• Bombcast
• Video Recap
  

Here's a breakdown of Microsoft's E3 2005 Press Conference..  
 
Info:

• Date: May 17, 2005
• Hosts: Robbie Bach, J Allard, Peter Moore
  

• Veoh (1 video) - 86 mns 27 seconds (actual press conference starts at 5:15, need to install Veoh player, also really bad audio quality)

• Kim walks down to a circular stage, places Xbox 360 in the middle of the stage.
• Video montage of people playing Xbox 360, showing off the menus.
• Robbie Bach, J Allard and Peter Moore take the stage.  Robbie Bach talks about Halo 2 record breaking sales, Xbox Live membership
• Video Montage of game line up for 2005 (many of which Xbox releases) : Half Life 2, Batman Begins, Blitz The League, Nascar 06
  
• Robbie announces Xbox 360 will be backwards compatible.
• GAME TRAILER: Dead Or Alive 4
• J Allard takes the stage, announces 160 titles currently in development, talks about how they came up with the design for the console.
• Shows how the dashboard, explains Gamer Card, Achievements, Marketplace
• Peter Moore takes the stage, here to show games coming
• GAME TRAILER: Lost Odyssey
• GAME TRAILER: Project Gotham Racing 3
• GAME TRAILER: Tom Clancy's Ghost Recon 3
• GAME TRAILER: NBA 2K6
• GAME TRAILER: Kameo
  
• GAME TRAILER: Call of Duty 2
• GAME TRAILER: Elder Scrolls IV: Oblivion
• GAME TRAI LER: Gears of War
• Don Mattrick takes the stage, and has Robert Gallery (Oakland Raider Offensive Tackle), announces 6 EA Games for launch
• Video Montage of EA Games coming: Madden 06, FIFA 06, Need for Speed: Most Wanted, Tiger Woods 06, NBA Live 06, The Godfather
• GAME TRAILER: Need for Speed: Most Wanted (shows actual gameplay)
• Robbie Bach takes the stage, announces a new partner to Xbox 360
• GAME TRAILER: Final Fantasy XI Online
• Robbie Bach closes the show, explains goal of reaching 1 Billion consumers.
  

Here's a breakdown of Microsoft's E3 2006 Press Conference..  
 
Previous Microsoft E3 Press Conferences:

• 2005
  

• Date: May 9, 2006
• Time: 11 am PDT
• Host: Peter Moore
• Location: Chinese Theater (Hollywood)

• YouTube (1 video) - 80 mins 20 seconds

• GAME TRAILER: Gears of War, after it ends a blonder  Cliffy B takes the stage.
• STAGE DEMO: Gears of War
• Peter Moore takes the stage, talks sales figures, Xbox Live, talks about Xbox Live Arcade
• Video montage of Xbox Live Arcade upcoming releases... Pac Man, Frogger, Sonic the Hedgehog, Defender, etc
• GAME TRAILER:: Lumines Live
• Video montage of upcoming games: Lost Planet, Brothers in Arms: Hell's Highway, F.E.A.R., Too Human, Saints Row, etc.
• GAME TRAILER: Fable 2, welcomes Peter Molyneux to Microsoft Studios
• GAME TRAILER:   Forza Motorsport 2, announced release date and 12 player online play
• GAME TRAILER: Blue Dragon
• GAME TRAILER: Tom Clancy Splinter Cell: Double Agent
• Jim Veevaert comes on stage to demo Viva Pinata
• STAGE DEMO: Viva Pinata
• Peter Moore talks about entertainment coming to Xbox Live Marketplace, announces Xbox HD-DVD player accessory.  Shows off his Halo 2 tattoo, then his Grand Theft Auto IV tattoo.
• Talks about Games for Windows and working with best gaming platform, Windows Vista.
• STAGE DEMO: Crysis 
• Montage of games for Windows Vista, shown: Flight Simulator X, Crysis, Age of Conan, etc.
• GAME TRAILER: Shadowrun
• GAME TRAILER: Alan Wake
• Bill Gates takes the stage, mentions his a big PGR3 fan.  Adding 8 new countries for Xbox 360. Talks about Live Anywhere (cell phones, pc, xbox live all connected)
• Scott Hanson takes the stage and demo's the Live Anywhere.
• GAME TRAILER: Halo 3

Here's a breakdown of Microsoft's E3 2010 Press Conference.. 
 
Previous Microsoft E3 Press Conferences: 

• 2005
  
• 2006
• 2007
• 2008
• 2009

• Date: June 14, 2010
• Time: 10:30 am PDT
• Host: Don Mattrick
• Location: Wiltern Theatre (Los Angeles)

• Gamespot (1 video) - length: 86 mins 16 seconds 
• IGN (4 vidoes) - Part 1 (22 mins 13 sec), Part 2 (21 mins 16 sec), Part 3 (21 min 39 sec) , Part 4 (24 min 3 sec)

• GAME TRAILER: Call of Duty: Black Ops, followed by Mark Lamia coming on stage.
• STAGE DEMO: Call of Duty: Black Ops
• Don Mattrick comes on stage, announces Kinect name
• Hideo Kojima takes stage, introduces Shigenobu Matsuyama
• GAME TRAILER: Metal Gear Solid: Rising
• Phil Spencer takes the stage, announces everything on will be only available on Xbox 360.
• Cliffy B takes the stage with 3 other people
• STAGE DEMO: Gears of War 3 - 4 player Co-Op, new female gears, new lambent mutant
• Peter Molyneux takes the stage
• GAME TRAILER: Fable 3
• GAME TRAILER: Ryse
• Marcus Lehto takes the stage, talks about Halo: Reach
• STAGE DEMO: Halo: Reach
• Marc Whitten takes the stage, shows Kinect functionality with Dashboard, Windows Phone 7, Zune Marketplace, Video Kinect
• Trey Whingo and Josh Elliot come on stage to announce and show ESPN on Xbox Live
• Kudo Tsunoda takes the stage, introduces Kinect Games
• STAGE DEMO: Kinectimals
• STAGE DEMO: Kinect Sports - followed by GAME TRAILER
• GAME TRAILER: Your Shape: Fitness Evolved
• STAGE DEMO: Your Shape: Fitness Evolved
• STAGE DEMO: Dance Central - Alex Rigopulos takes the stage to announce features of the game.
• Phil Spencer comes on stage, announces Kinect launch date, deal with Lucas Arts
• GAME TRAILER: Kinect Star Wars
• Bill Giese and Dan Greenawalt take stage, show Forza with Kinect support
• Don Mattrick takes stage, announces new Xbox 360 model and shipping date, price and free models for everyone in attendance.

• Bombcast
• Video Recap

Here's a breakdown of Microsoft's E3 2009 Press Conference..   
   
Previous Microsoft E3 Press Conferences: 

• 2005
  
• 2006
• 2007
• 2008

• Date: June 1, 2009
• Time: 10:30 am PDT
• Host: John Schappert
• Location: Galen Center (USC Campus)

• Gamespot (1 video) length - 118 mins 45 seconds

• GAME TRAILER: The Beatles : Rock Band
• Alex Rigopulos and Van Toffler take the stage, 
• STAGE DEMO: Several members of Harmonix go onstage to play "Day Tripper" from The Beatles: Rock Band
• Video shows sample of the Set List, Van welcomes Dhani Harrison, Yoko Ono, Olivia Harrison, Ringo Starr and Paul McCartney to the stage.
• John Schappert takes the stage, announces no figures are going to be talked about and announces 10 games being first shown that night
• Tony Hawk takes the stage, shows off Board peripheral for Tony Hawk Ride
• GAME TRAILER: Tony Hawk Ride
• GAME TRAILER: Call of Duty: Modern Warfare 2
• STAGE DEMO: Call of Duty: Modern Warfare 2 - Jason West and Vince Zampella take the stage and show off Snow Mobile mission.
• Yoshinori Kitase and Motomu Toriyama take the stage (with translator)
• STAGE DEMO: Final Fantasy XIII
• John Schappert takes the stage and announces everything from there on out is exclusive to the Xbox 360
• STAGE DEMO: Shadow Complex -  Cliffy B and Donald Mustard announce and show off game.
• GAME TRAILER: Kinect Joy Ride - doesnt mention anything about Kinect, only talks about Avatar Support and it's free.
• GAME TRAILER: Crackdown 2 - also announced for the first time
• GAME TRAILER: Left 4 Dead 2 - also announced for the first time
• GAME TRAILER: Tom Clancy's Splinter Cell: Conviction
• STAGE DEMO: Splinter Cell: Conviction - show off by Maxime Beland and Alexandre Parizeau
• GAME TRAILER: Forza Motorsport 3
• Dan Greenawalt comes on stage and talks about customization, shows more gameplay video
• STAGE DEMO: Halo 3: ODST - played by Joe Staten
• GAME TRAILER: Halo: Reach
• GAME TRAILER: Alan Wake - Sam Lake introduces the game.
• STAGE DEMO: Alan Wake
• Announces partnerships with Last.FM, Facebook and Twitter.   Felicia Day comes on stage to show features.
• GAME TRAILER: Metal Gear Solid Rising - Don Mattrick comes on stage Hideo Kojima
• Don Mattrick introduces new wave of gaming, shows " Project Natal" with montage of games in the living room.
• Steven Spielberg comes on stage to talk about the future of gaming.
• Kudo Tsunoda comes on stage, shows Ricochet, Painting Game
• Video of Peter Molyneux talking about Milo, shows some gameplay

• Bombcast
• Video Recap

Here's a breakdown of Microsoft's E3 2008 Press Conference.. 
  
Previous Microsoft E3 Press Conferences: 

• 2005
  
• 2006
• 2007

• G4 (1 video) - length: 97 min 11 seconds
• Gamestop (1 video) - length: 91 minutes (weird angle/bad audio)

• Date: July 14, 2008
• Time: 10:30 am PDT
• Host:    Don Mattrick
• Location:  West Hall at the Los Angeles Convention Center

• Don Mattrick takes the stage, shows live action trailer for Fallout 3
• STAGE DEMO: Fallout 3 - Todd Howard shows off gameplay, combat system.
• STAGE DEMO: Resident Evil 5 - Jun Takeuchi (translated), shows/introduces online CO-OP mode.
• STAGE DEMO: Fable 2 - Peter Molyneux shows wife, physical changes in characters and online CO-OP mode.
• STAGE DEMO: Gears of War 2 - Cliffy B along with Ron Ferguson play CO-OP, show the ride a Brumak level.  Announce new Horde Mode.
• Don Mattrick talks figures, announces NBC/Universal Studios coming to Xbox Live Library.
• John Schappert takes the stage, introduces new Xbox Live Dashboard and Avatars.
• Announces new XBLA titles: Geometry Wars 2, Galaga Legions, Portal: Still Alive, South Park Tower Defense
• John talks about Community games, announces partnership with Netflix
• Shane Kim takes the stage, goes over some figures
• GAME TRAILER: Banjo Kazooie: Nuts and Bolts
• GAME TRAILER: Viva Pinata: Trouble in Paradise
• GAME TRAILER: Scene It?: Box Office Smash
• STAGE DEMO: You're In the Movies
• Kai Huang takes the stage to talk about Guitar Hero World Tour, describes music studio and GH Tunes. 
• GAME TRAILER: Lips, then Duffy comes on stage and sings "Mercy"
• Alex Rigopulos takes the stage to talk about Rock Band 2, announces setlist and forward compatibility with Rock Band DLC
• Don Mattrick returns to the stage, introduces Yoichi Wada - talks about Infinite Undiscovery and Star Ocean.
• GAME TRAILER: Final Fantasy XIII

• Bombcast
• Video Recap 

Here's a breakdown of Microsoft's E3 2007 Press Conference.. 
  
Previous Microsoft E3 Press Conferences: 

• 2005
  
• 2006

• Gamespot (1 video) - length: 86 min 29 seconds, bad audio quality

• Date: July 10, 2007
• Time: 8:30 pm PDT
• Host:  Peter Moore
• Location: Santa Monica High School Auditorium (outdoors)

• Corporeal plays the Halo theme followed by Peter Moore taking the stage.
• STAGE DEMO: Rock Band, Harmonix and Peter Moore play The Hives "Main Offender".  Peter Moore fails out and hits the menu button twice.
• GAME TRAILER: Viva Pinata: Party Animals
• GAME TRAILER: Mass Effect
• Peter Moore talks sales figures, plays montage of games coming to Xbox 360
• Jeff Bell comes out onto stage (debuts Scene It? and new controller)
• GAME TRAILER: Naruto: Rise of a Ninja
• STAGE DEMO: Madden 08 (Jeff plays Reggie Bush, mention how they've been playing backstage at least 3 times)
• Jeff talks about Xbox Live, plays montage of XBLA games coming.  Talks about partnership with Disney to bring movies to Xbox Live.
• Shane Kim takes the stage, talks about Microsoft Game Studios.
• STAGE DEMO: Project Gotham Racing 4 - introducing bikes to the game, plays trailer at the end.
• GAME TRAILER: Lost Odyssey
• STAGE DEMO: Cliffy B plays Gears of War on Games for Windows Live
• Peter Moore takes the stage again, plays montage of PC Games and more exclusives.
• GAME TRAILER: Call of Duty 4: Modern Warfare
• STAGE DEMO: Grant Collier and Jason West come on stage to play a portion of Call of Duty 4.
• GAME TRAILER: Grand Theft Auto 4, announces 2 exclusive "Episodes" coming to Xbox 360.  Announces October 16th release date.
• GAME TRAILER: Resident Evil 5
• STAGE DEMO: Jade Raymond and Patrice Desilets come on stage to play Assassin's Creed.
• Peter Moore shows Neil Blomkamp's live action Halo video, announces the limited edition Halo Themed Xbox 360
• GAME TRAILER: Halo 3