Recentlyish finished:
Dungeon Siege 3 - Enjoyed this, I think most of the bad reviews are down to the apparently poor multiplayer. Single player campaign had a fairly generic storyline but nonetheless worth a punt if you like action RPGs.
Shogun 2 - It's a Total War game, what more can I say? Lots of replay value.
Starcraft 2 - I'm an utter n00b when it comes to multiplayer, but I loved the campaign. The sequels are definite pre-orders!
Unfinished and on hold:
Started but hated Fable 3 - terrible consolitis (texture flickering, controller references, terrible performance), GFWL
Started Two Worlds II - Jury's still out on this one but after a few hours played it's not sucked me in. Maybe it's just a slow starter...
Played a bit of Forsaken World but felt the WoW-style addiction coming on so I quit while I still could! (Been WoW clean for a few months now but the itch is returning ) FW also felt a little too restricted without spending real £££s
Current:
Odd round of Sanctum here and there
A bit of Minecraft on Allen's Hexus server
Started tonight on Bastion. Looking good so far, nicely polished for an indie game and the soundtrack's pretty awesome.
A level or 2 of Torchlight now and then
On the list to play:
Gears of War
Borderlands
Another campaign of Shogun 2