Looking for good platformer games to play..

Shank, Shank2, Mark of the Ninja

Seriously.. no Super Meat Boy or They Bleed Pixels mentioned?

Loved Mark of the Ninja. Outstanding game and has high replay value with the unlockables and such.

Um I would recommend any of the prince of persia games, mirrors edge is another great one. If you are looking for a 2d platformer though I would say go with either of the Trine games, Braid is great though it is more of a puzzle platformer, and Super Meat Boy of course if you like a challenge.