Let me think... Recently I've bought Fable: The Lost Chapters, Medieval II: Total War (with the expansion), E.Y.E Divine Cybermancy, and some in-game currency for an F2P game called Spiral Knights. Got all of these games during the awesome Steam sale going on right now. In addition to this, I recently bought the Humble Indie Bundle 4, which came with 7 games initially: Shank, Bit. Trip Runner, Super Meat Boy (which I already had), NightSky HD, Jamestown, Gratuitous Space Battles, and Cave Story+. Quite the deal for only $5.26. They then later added in the games from the Humble Bundle 3, which I already owned. So I gave these to a friend.
Needless to say, plenty of great deals for games if you know where to look.