Mine are
Infamous 1, 2, and Festival Of Blood
[PROTOTYPE] 1 and 2
Star Wars Force Unleashed 1, 2, and Sith Edition
BIOSHOCK 1 and 2
Any God Of War Games
Dead Space 1, 2, and 3
Halo Reach
Super Smash Bros Brawl
Saints Row 1, 2, and 3
Any Zelda Game
GTA 4
Any Marvel v.s. Capcom
Any Pokemon game
Sonic Dark Brotherhood
Any Soul Calibur
MarioKart Double Dash
Mortal Kombat Armageddon

What's Yours?