I have a pretty simple must buy on day one or very close to release list...
9/9- NHL 09
10/14- FIFA 09, SOCOM
10/21- LittleBigPlanet
11/4- Resistance 2
Pending: Motorstorm Pacific Rift (if load times aren't absurd like 1), Dead Space, Far Cry 2, Fallout 3 (I would get it day one but I will be juggling Madden, NHL, FIFA, Socom, and LBP), Quantum of Solace, Mirror's Edge, Shaun White Snowboarding, Prince of Persia.