It wouldn't make any sense if it was The Outsider, they are clearly setting it up to be some sort of post-apocalyptic/nuclear/atom game (from what I've read and seen, The Outsider is none of that). 
Part of me really want to believe it's Duke Nukem Forever or HL2:E3, but these doesn't quite fit the description either.

EDIT: Adjusting the nob on right, you can make the picture less static-y. If you wait long enough, there's a picture of a missile, with a Pip-boy like Person in the tail of the missile. DAT FALLOUT REFFERENCE.
 
My day just got a lot more interesting.

more about gknova6 website..::
 
 

   Domain Name: GKNOVA6.COM
   Registrar: MARKMONITOR INC.
   Whois Server: whois.markmonitor.com
   Referral URL: http://www.markmonitor.com
   Name Server: NS1.HOSTMONSTER.COM
   Name Server: NS2.HOSTMONSTER.COM
   Status: clientDeleteProhibited
   Status: clientTransferProhibited
   Status: clientUpdateProhibited
   Updated Date: 26-mar-2010
   Creation Date: 23-mar-2010
   Expiration Date: 23-mar-2012

Was just listening to the audio on that site that was linked in the update. Right at the end it says "hell is purple". Googled it and came to this site:  http://www.purplehell.com/ Turns out to be "  Purple Hell, your one stop shop for riddle tools and resources. 
 
Don't know if thats any help. Its interesting though. 
 
edit: One more thing. The first letter of these words:   Cryptography 
Isotope
Philanthropy
Hydrogen
Ember
Rebirth 
 
Spells Cipher. Thats as far as I got...      

If you go through whois.domaintools you get: 
 Registrant:
        DNS tination Inc
        DNStination Inc.
        303 Second Street Suite 800N
         San Francisco CA 94107
        US
         +1.4155319335 Fax:
 
Google maps with  San Francisco CA 94107 gives us a nice picture of:

" It wouldn't make any sense if it was The Outsider, they are clearly setting it up to be some sort of post-apocalyptic/nuclear/atom game (from what I've read and seen, The Outsider is none of that). 
Part of me really want to believe it's Duke Nukem Forever or HL2:E3, but these doesn't quite fit the description either. "

i just found out you can turn the nob thing on gnova website lol..

take the first letter of each of those words CIPHER

this is DEFINITELY ... Fallout: New Vegas.
 
gnova6 website , you can turn the knob to adjust the picture on the screen. Near the end it shows the element of uranium, and a picture of a group of people that could be something like the manhatten project but i could be wrong about that part.

Wow, good work everyone.

Deffinitely Bethesda, as this explains it:
 
 http://www.joystiq.com/2010/04/05/arg-we-cant-believe-we-wasted-time-on-that/

So the stadium is called the AT&T park. AT&T making a post-apocalyptic game seems unlikely...

@the_dudefather

" Source for some of the cartoon bits  http://www.youtube.com/watch?v=50lxlqzRaVE&feature=related "

 

Someone explain to me what is this:
 
 http://img85.imageshack.us/img85/6626/mysterypics.jpg

@Scottstimo:  
Its kinda weird though, that they got a return adress to check out and GiantBomb did not. Also, leaving a return adress is way too revealing. Its not that simple, at least I wont believe that.
 

@Yoda

" Someone explain to me what is this:   http://img85.imageshack.us/img85/6626/mysterypics.jpg "

Has anyone considered the blinking light on the tv to see if that has significance. perhaps morse code. Though it could be random blinking. Also considering the 5 lights, and that people don't like to do work on weekends I agree with the theory that the site will change each day this week and the April week two is referring to this week.

Isn't this obvious?
 
The retro style, the historical elements, the science gone mad ...
 
all points to Lincoln Force!

" Someone explain to me what is this:   http://img85.imageshack.us/img85/6626/mysterypics.jpg "

I just thought of something. If it is fallout related that might explain why it was sent to brad. He did just start fallout 3 and if the Bethesda guys listen to the bombcast they may figure he'd be best to send it to. Either that or everyone loves brad.

" I just thought of something. If it is fallout related that might explain why it was sent to brad. He did just start fallout 3 and if the Bethesda guys listen to the bombcast they may figure he'd be best to send it to. Either that or everyone loves brad. "

I think the most logical answer here is Fallout: New Vegas, but why go through all this fuzz for a game that has already been announced. The marketing style on the other hand fits Valve, with the Portal audio clips surfacing not long ago, but then again the contend doesn't fit any of their games. Unless it's a completely new one, though I really doubt that.
By the way, got to say I'm really impressed by the community's riddle-solving skills.

DAMN Giantbomb community YOU SMART!!!!  But now what gets wetter......as it DRYS!?

Giant Bomb community - you never cease to amaze me. Some A grade detective work there in solving it.

Defintly fallout. The websit gave it away. You can fiddle with the tv so you can get a clear image. Uranium. Yer defintly Fallout. But maybe not vegas.

I'm saying at the very end of CIPHER the Rebirth announces a remake of Fallout 1.

Elderscrolls V Please

But is Bethesda still in bethesda? because the towns wiki page says this 
   
 Software company Bethesda Softworks was originally located in Bethesda, but moved toRockville, Maryland in 1990    
  
bethsoft's wiki page states the same

did some research on other sites that got it. Joystick got "APRIL WEEK TWO" i listened to the tv thing and copyed down some numbers i heard "NOVSAIX"probable anagram. best thing i could get is nova six

" I think the most logical answer here is Fallout: New Vegas, but why go through all this fuzz for a game that has already been announced. The marketing style on the other hand fits Valve, with the Portal audio clips surfacing not long ago, but then again the contend doesn't fit any of their games. Unless it's a completely new one, though I really doubt that. By the way, got to say I'm really impressed by the community's riddle-solving skills. "

Hint: Uranium   U:235
 
That's all you need to know.

Here's my totally crazy, probably wrong guess: could this be for the CoD game Treyarch is probably making, which is probably going to take place in the Cold War?