Here's a few deals that jumped out to me. (I would have posted links, but the forum tells me I can't because I'm a "new user")

Puzzle Agent (steam) - $1 w/CAGROCKS

Ticket to Ride (steam) - $2.25 w/CAGROCKS

Inversion (steam) - $3.50 w/CAGROCKS

Singularity (steam) - $5.50 w/CAGROCKS
(I Personally hated this game, but a lot of people liked it.)

Ghost Recon: Future Soldier Deluxe Edition - $9.50 w/CAGROCKS
(I guess Amazon doesn't sell the steam version of this game.)

Ace Combat: Assault Horizon (steam) - $16 w/CAGROCKS