I've seen a few threads about DLC but I was curious as to what songs people have actually purchased?

Here's Mine:

1. Ride the Lightning - Metallica
2. ... And Justice for All - Metallica
3. Blackened - Metallica
4. 3's & 7's - Queens of the Stone Age
5. Sick,Sick,Sick - Queens of the Stone Age
6. Little Sister - Queens of the Stone Age
7. Joker and the Thief - Wolfmother
8. Moonage Daydream - David Bowie
9. More than a Feeling - Boston
10. Smokin' - Boston
11. Rock and Roll Band - Boston
12. Promised Land - Vesuvius
13. Still Alive - GLaDOS
14. Simple Man - Lynrd Skynrd
15. Zero - Smashing Pumpkins
16. Call Me - Blondie
17. Synchronicity II - The Police
18. Roxane - The Police
19. March of the Pigs - Nine Inch Nails
20. The Perfect Drug - Nine Inch Nails
21. The Collector - Nine Inch Nails
22. Burn - Nine Inch Nails
23. Capital G - Nine Inch Nails
24. Last - Nine Inch Nails
25. Moving to Seattle - The Material
26. Rock Rebellion - Bang Camaro
27. Rock n' Roll Dream - Crooked X
28. Saints of Los Angeles - Motley Crue
29. Screaming for Vengeance - Judas Priest
30. The Hellion/Electric Eye - Judas Priest
31. You've Got Another Thing Comin' - Judas Priest
32. Shockwave - Black Tide
33. Beethoven's C*** - Serj Tankian
34. Afterlife - Avenged Sevenfold
35. Limelight - (as made famous by) Rush
36. Working Man (Vault Edition) - Rush
37. Who Are You - The Who
38. Hysteria - Muse
39. New Wave - Pleymo
40. Hier Kommet Alex - Die Toten Hosen
41. Sex Type Thing - Stone Temple Pilots

1. Still Alive-GLaDOS

1) Ride the Lightning by Metallica
2) Blackened by Metallica
3) …And Justice For All by Metallica
4) Roxanne by The Police
5) Synchronicity II by The Police
6) Can't Stand Losing You by The Police
7) Ever Fallen in Love? by Buzzcocks
8) Rockaway Beach by Ramones
9) I Fought the Law by The Clash
10) Don't Look Back in Anger by Oasis
11) Live Forever by Oasis
12) Wonderwall by Oasis
13) March of the Pigs by Nine Inch Nails
14) The Perfect Drug by Nine Inch Nails
15) The Collector by Nine Inch Nails
16) Call Me by Blondie
17) Simple Man by Lynyrd Skynyd
18) Message in a Bottle by The Police
19) Cheeseburger in Paradise by Jimmy Buffet
20) Margaritaville by Jimmy Buffet
21) Volcano by Jimmy Buffet
22) Rock Rebellion by Bang Camaro
23) Shake by Count Zero
24) Sprode by Freezepop
25) Indestructible by Disturbed
26) Inside the Fire by Disturbed
27) Perfect Insanity by Disturbed
28) Moving To Seattle by The Material
29) A Clean Shot by The Myriad
30) Bullets & Guns by Them Terribles
31) China Cat Sunflower by The Grateful Dead
32) Casey Jones by The Grateful Dead
33) Sugar Magnolia by The Grateful Dead
34) Truckin' by The Grateful Dead
35) Franklin's Tower by The Grateful Dead
36) I Need A Miracle by The Grateful Dead
37) Peace of Mind by Boston
38) More Than a Feeling by Boston
39) Smokin' by Boston
40) Rock and Roll Band by Boston
41) Something About You by Boston
42) Hitch a Ride by Boston
43) Fortunate Son by Creedence Clearwater Revival
44) Bang a Gong (Get It On) by T.Rex
45) My Sharona by The Knack
46) Joker & the Thief by Wolfmother
47) Queen Bitch by David Bowie
48) My Iron Lung by Radiohead
49) Buddy Holly by Weezer
50) Gimme Three Steps by Lynyrd Skynyd
51) Limelight by Rush
52) Hard to Handle by The Black Crowes
53) Interstate Love Song by Stone Temple Pilots
54) Die, All Right! by The Hives
55) Last Train to Clarksville by The Monkees
56) Working Man by Rush
57) Zero by Smashing Pumpkins
58) Date With The Night by Yeah Yeah Yeahs
59) Kool Thing by Sonic Youth
60) Train in Vain by The Clash
61) Hysteria by Muse
62) My Best Friend's Girl by The Cars
63) Just What I Needed by The Cars
64) You're All I've Got Tonight by The Cars
65) Girls Who Play Guitar by Maximo Park
66) Hammerhead by The Offspring
67) Closer To The Heart by Rush
68) Going Mobile by The Who
69) Who Are You by The Who
70) Dirty Little Secret by The All-American Rejects
71) All the Small Things by Blink-182
72) We Care a Lot by Faith No More
73) Shockwave by Black Tide
74) Crushcrushcrush by Paramore
75) Saints of Los Angeles by Mötley Crüe
76) Rock N Roll Dream by Crooked X
77) Still Alive by GLaDOS
78) Promised Land by Vesuvius

All told, I have 136 songs (79 DLC + 57 on disc).  There's one missing in that list; not sure which it is.  Sufficed to say, I'm really looking forward to Rock Band 2's song selection menu.  Getting through all of the DLC is a pain.

1. Perfect Insanity by Disturbed
2. Indestructible by Disturbed
3. Inside the fire by Disturbed
4. Critical Acclaim by Avenged Sevenfold
5. Blackened by Metallica

I only bought the two NIN song packs and got Still Alive by GLaDOS, since it's free and, well, awesome.

Just the Punk pack and the free songs. Not gonna buy any more either.

I have
The 2 Free Songs
The Who 12 pack
The Police 3 pack
The Qotsa 3 pack
The 10 Euro songs
The Boston 6 pack
The Grateful dead 6 pack
5 single songs
so 37 DLC songs all up. Soon to be 39 with the two Soad Songs
Edit: added police pack :P
Edit2: Forgot about the 10 european songs

Metallica Pack,
Queens Pack,
Iron Lung- Radiohead,
Teenage Lobotomy- Ramones,
Still Alive- GLaDOS,
 El Scorcho- Weezer.