It's a free Civ V weekend on Steam! For the 2 people here who don't own it, now's your chance to play it! (Saints Row 3 is also free this weekend too.)
In other news, Amazon just opened their Indie Games shop, with lots of deals and discounts on smaller titles and a number of games that aren't on Steam. But, since folks have an irrational belief that "all my games must be on Steam", here's the standout deal for you. The
Oh so Fine and Dandy bundle for $9.99, which includes Costume Quest, The Cave, Psychonauts, Brutal Legend, Stacking, and Iron Brigade. Given that both Brutal Legend and The Cave cost more than that , you might want to jump on this deal.