Alan Wake. - Played it on Xbox. Liked the story, hated the controls. Hoping it's better on PC.
Magicka. - Twice. One for me and one for my brother.
Serious Sam 3. - Big fan of Serious sam the first and second encounter. Number 3 looks like a must have.
And that's it for now. There's some more offers I need to check out while they're there.