I've only got a PS3 / Wii this gen so far, so I'll list the 360 games I want (no DS, the list'd be too large):
JRPG's: IU, ToV, SO4, LO, BD
Halo 3 (split screen online*!*), GoW 2
Castle Crashers, Braid
Also probable I'd want Mass Effect and Fable 2. I've just had trouble getting into WRPG's before (mainly Bioware), probably just need to get used to em.