Humble Indie Bundle #4 includes Jamestown, Bit.Trip Runner, Super Meat Boy, Shank and NightSky HD. Pay more than the minimum for Gratuitous Space Battles and Cave Story+.
Indie Royale's Xmas Bundle includes The Blackwell Trilogy: Remastered, Eets, Dino D-Day and The Oil Blue. Bonus items greenTech+ and Shellblast were recently added. The current minimum price is a little over four bucks.
Swing Swing Submarine (developer of Blocks That Matter) has been holding drawings for a different game each day. The catch is liking their Facebook page and the posts of the desired prize.
Steam has been having server issues but they're holding their expected sale and handing out prizes for game achievements similar to their summer event. (Blah blah blah gift me a game from my wishlist if you want a lifetime Fooldom Come subscription etc.)