Darwinia and Multiwinia are now miiiine (as of last night. Tried them out and don't have a clue what they are or what you're supposed to do!). Already own the Doom games and Portal so nothing for me today.
Are now miiiiiine! Uneventful end to the sales though, I thought they would have put up something new and not recycle old titles. But on a pretty awesome note yesterdays daily sales haven't expired (Trine, Morrowing etc).