This is the first time I can ever remember actually feeling fatigued at a Steam sale. But they do keep putting good stuff out there at steep discounts, so I'm not going to complain too much!
Space Pirates and Zombies: $2.49 - Or SPAZ, for short. Games like this aren't really made any more, which was kind of the point of this one being made. The developer is just a little two-man outfit, but they've pulled off a remarkably polished game. Much like Terraria, it gets periodic updates, too.
Dungeon Defenders: $3.74 - I've spend quite a few hours in this game with my buddy Aaron Stack, who liked it so much he gifted me a copy so we could do multiplayer together. It's a great little game. The indie scene has gotten to the point where it really maes quality product, and this is a prime example. It's well worth having, playing, and exploring the ins and outs of the game is deceptively deep and a huge amount of fun.
What I'm getting: Homefront. I hear it's not the greatest, but I'm captivated by the concept and really want to try it out.