Actually, I should go through and make a full accounting of my haul so far, just to see how much damage it's done to me.

Deus Ex
Just Cause
Far Cry
KOTOR
SpaceChem
Audiosurf
Left 4 Dead 2
There were a few other daily games that I'd already picked up for dirt cheap in past sales, so it could have been even more than that. And there are still two days left, too.

I do have a question for the folks in here. I'm going to wind up with at least one, maybe two prizes' worth of tickets by the time Sunday rolls around, and I'm wondering what to cash them in for. The TF2 and Portal 2 items were what I originally wanted, I picked up the SpaceChem pack because I bought that during the sale, and then I went for Alien Breed 2 because, hey, free game. There isn't really anything amongst the rest of the prize games that I'm sure I'll buy at any point. Monday Night Combat looks fun in general (and the freebie prize sounds hilarious), and several of my Steam friends seem to own that Defense Grid game. I may get the Serious Sam HD releases at some point, but I don't care much about multiplayer skins for that. Any recommendations?