I've purchased Portal 2, Bastion, and The Witcher (Don't know much about it but figured for $2.50 if I don't like it... not a huge loss).

I need to buy Trine today.

Amnesia, Sims 3, Legends of Grimrock, and Audiosurf are on my wishlist.

Unfortunately I can't even download the games yet because of my internet connection, and that prevents me from playing any multiplayer games as well.