I found some codes while I was cleaning out my email. I don't know if all of the codes work. Enjoy!
DJ Hero 2 Tiesto Mix Pack:
YHFJH-HHY4F-3P369-GF9QP-YRC6Z (Xbox 360)
V74YG-GXT7J-WF9TD-6W6MP-CYGTZ (Xbox 360)
BPM9-6HNB-BRMB (PS3)
Dragon Age Origins: Awakening- Tier 7 Shield...