Bully: Scholarship Edition (so far, so fun, though I did pass on GTA IV)
Mark of the Ninja (Awesome, awesome lil' game. Highly recommended)
Monaco (by endorsement courtesy Penny Arcade. Only played like 3-4 levels so far, though I get the impression that MP might be a total blast)
Batman: Arkham City GOTY (I enjoyed Arkham Asylum, so...)
Dead Space (only ever got like half an hour on a friends PS3, thought it might have potential to be really fun, so...)
GalCiv II Ultimate Edition (had the regular GalCivII, lost the disc, but since GalCiv is the only 4X game to rival Civ for me, I had to get it.)
LA Noire (word of mouth and critics made me do it. not played a minute of it yet. save it for the lean months)
Hotline: Miami (it was cheap and looked fun. not played yet)
The Testament of Sherlock Holmes (since "The Case of the Serrated Scalpel" and the "Rose Tattoo", I've been a bit of a Holmes Whore, so yeah...)
Total War: Shogun 2 (CA can do no wrong by me... except have ridiculous system requirements. Definitely bought that one for the laptop, which has more horsepower than the regular desktop pc)
Universe Sandbox (NERD ALERT! Seriously though, playing god for, like, 3 bucks? Duh!)
Many others I already got last Christmas sale, or otherwise (DX Human Revolution, Walking Dead), and others I painfully, deliberately passed on (Borderlands 2 for 10??), holding out for the big one... like CivV BNW for 60% off... please?
EDIT: ... and just now got EVE for 5 Euros. Pray for me, brothers and sisters...)