Have (All Steam redeemable):

Bioshock 2
Sleeping Dogs
Cogs
Brazen Prototype (From the DoubleFine Amnesia Fortnight Humble Bundle)
Toki Tori
World of Goo
Crayon Physics Deluxe
Eufloria
Sword & Sworcery
Avadon: The Black Fortress
Swords & Soldiers HD
Zen Bound 2
Cortex Command
Humble Indie Bundle 2
Humble Indie Bundle 3
Gish

Want:

Bully: Scholarship Edition
Dark Souls: Prepare to Die Edition
Rayman Origins
Trine 2
Assassin's Creed Brotherhood
Mafia
Torchlight 2