tammerwhisk: Anything but strategy and or micromanagement type stuff? Tastes are all over the place, but don't possess the patience for older or harder-core strat.
Hmm, i'll throw out some of my favs. Keep in mind I am a bit more focused on older games than newer ones and there's alot in my backlog from both I haven't gotten around to playing yet.
Thief 1 & 2 and Deux Ex GotY if you like stealth.
Fallout 1 & 2 if you like turn based tactical RPGs. See also Shadowrun Returns for something newer in that area.
System Shock 2 if you like FPS/RPG hybrids with great atmosphere.
Tomb Raiders 1, 2 & 3 if you don't mind challenging 3D rendered platforming.
Doom, Quake, Unreal and etc. series if you like pure old school FPS games.
Torchlight 1 & 2 and Titan Quest if you like Diablo style action RPGs.
Star Trek 25th Anniversary, Quest for Glory, Secret of Monkey Island 1 & 2, Day of the Tentacle (Which also includes Manic Mansion), etc. if you like point and click adventures.
Terraria if you like 2D platformers with a gathering and crafting focus. (Got addicted to this one, lol.)