Medal of Honor (2010): H295P-VL4NW-8TJBL
Insanely Twisted Shadow Planet: PPGPG-HBXA2-5PKLG
(I'm pretty sure I have not used the ITSP key. If it is, sorry)
Edit: All gone
All of these activate on Origin:
Dead Space - 73Y8-XX7R-FNE4-JJCA-GXE7
Burnout Paradise: The Ultimate Box - A5SA-FUN3-AEQG-3GES-5KPD
Crysis 2 Maximum Edition: 6822-VUZA-6N5Z-948B-CDXY
Medal of Honor: BSZR-PPFL-25GH-FBMX-AG8J
Mirror's Edge: D8B3-XD39-LZDQ-84FH-PYC2
Edit: All gone