While not necessarily released in 2010, these are things I discovered in 2010.
I didn't see much new this year. Based on what I saw though I enjoyed The Book of Eli quite a bit despite the last 15 minutes. I would very much like to see Inception and based on what I'm seeing in this thread, I would be sorely remiss if I do not soon do so.
Borderlands. So much fun in Co-op I can barely stand it.
Runners Up: are Mass Effect 2 and Star Craft 2.
WORST GAME OF 2010: ALAN WAKE. Holy crap, I just, I, I don't even know how to put into words how much I loathe this game.
The Community. Simply amazing writing. Haven't laughed this hard in a long time at a television show.
Runner Up: The Walking Dead. It's a show about zombies and it's sweet.
There was good music released this year?