inFAMOUS:  Just bought this game yesterday.  The controls are super tight and intuitive, and the electral powers are really fun to use. 
Plants vs Zombies:  I can't believe that years ago I despised Pop Cap for being popular for the horribly generic Bejeweled.  But I've come around, and this tower defense game is simple, yet engaging.]
Banjo-Tooie:  I haven't gotten into this game as much as the first one yet, but I also haven't had much time to play it.  I will get around to it though.
Fallout 3:  I've technically beat this game, but I still need to go back and get the last few achievements before I put this one down.  1250/1350, go go go!
World of Warcraft:  Still playing very occasionally.  The last couple times I've logged on to raid have been pretty boring, typically because I seem to pick days that key guild members are absent.
Left 4 Dead:  Holy crap, this game is always fun, even when you are doing horribly and your team might as well be cats dancing on keyboards.

Unfinished Games to get to:
Banjo-Kazooie Nuts and Bolts:  I will get back to finishing this game eventually, as it was really fun.  But I've been trying to split myself between enough games as it is.
Titan Quest: Immortal Throne:  Bought this on Steam a couple weeks ago.  I'm at the beginning of the third act on single player.  Fun game, but I think I should try it online to get the full experience.