None of the new ones. I still have several left over from the Steam Summer Sale. Now that I've beaten The Walking Dead, Alan Wake, Recettear, Thomas Was Alone, Assassin's Creed 2, and Bioshock Infinite, my remaining list includes Fallout: New Vegas and Assassin's Creed: Brotherhood.
Edit: And some older ones. I still have to beat the Dragonborne DLC in Skyrim, Portal 2 (yes, I'm bad and should feel bad; I've put this off for about a year now...), The Witcher 2, and Kingdoms of Amalur. I've actually put about 10 hours into that last one, and I feel like I've barely scratched the surface.
Edited, Aug 24th 2013 11:43am by LockeColeMA