Dragon Age: Origins was fucking awful. I simply cannot play single player real time RPGs that aren't Fable (fuck xbox 360 exclusivity), Dungeon Siege or Elder Scrolls.
The original Assassin's Creed -- I tried to play it on the 360 and found the controls to be too... crap. I've now borrowed it from work for the PS3 and I'm really enjoying it! Win! :-D