Have:
MS Arcade bundle
AOE3 bundle
Burnout Paradise Ultimate Box (Origin)
Mirrors Edge (Origin)
Mercenaries 2 (requires CS to activate with Origin I think)
Bulletstorm (requires CS to activate with Origin I think)
Amalur bundle (Origin) $15 Amazon GC

Want:
Dead Rising 2 OTR
Alan Wake Franchise
LotR War in the North (for some of the individual arcade keys or an Origin key).
Amazon GC (except for MS bundles)