Zone of the Enders 2 - I HATE any sort of mecha games, but this is (one of) the most amazing games I've played...for ps2. Unfortunately, I don't think I have a favorite (maybe Blazblue), but I love these:
Deadspace 1 & 2
Borderlands
Team fortress 2 (pc)
Bioshock
Blazblue continuum shift: extend
Bookmarks