As it stands now, in rough order:
Super Mario Galaxy 2 - Easily my favorite game so far. Yoshi really added an element to this one I loved.
God of War III - Holy. Shit.
Final Fantasy XIII - LOL story and far too drawn out, but the battle system is awesome. Overall the game was just fun.
Pokemon SoulSilver - <3 Espeon, but I think I've been playing too much Pokemon lately. It's not grabbing like it used too. =(
But I'll probably have to edit this when I finish Peace Walker.