Thomas Was Alone
Braid
Elder Scrolls (especially IV and V)
Oh, and the Star Wars collection is $33.99 this weekend on Steam, you get Dark Forces, Jedi Knight, Jedi Knight II, Jedi Academy, Mysteries of the Sith, Battlefront II, Starfighter, Republic Commando, Republic Heroes, KOTOR I & II, and Force Unleashed I & II