Well I've gone through all the demos and I'm picking up:
Rocket Riot (holy

that game was surprisingly fun- played the demo for ~30 minutes)
Assault Heroes 2 (liked the first one and almost bit the last couple times this went to 400 but figured it would drop to 200 like the first)
3D Ultra Mini Golf (seemed worth a couple bucks)
Mad Riders (decent enough demo)
Babel Rising (confirmed playable via regular controller)
Both Transformers WfC DLCs (started playing it recently & almost bought these for 400 but decided they weren't worth it since they didn't have any additional gamerscore included)
Pinball FX 2 Marvel: Vengeance & Virtue pack (mo pinball!)
Bloodforge is cool but I will gamble on a lower price during the end of the year sale. The Simpsons is still fun, but I have a feeling it's going to be another super 200 point deal sometime so I'll wait on that as well. Sine Mora is a buy for 600 or less.
Still on the fence about Rayman 3 HD and Warp though.
Already own Limbo, Carcassonne, Geometry Wars 2, Joe Danger SE, Mortal Kombat Arcade Collection, Raskulls, Rock of Ages, Stacking, and of course the Pinball FX 2 Core pack. I would recommend Carcassonne, Geometry Wars 2, Raskulls, Rock of Ages and the Pinball FX 2 Core pack to anyone interested. All pretty good to excellent games.