I <3 Steam.
So far I have bought...Oblivion GOTY, Fallout 3 GOTY, Trine 2, Brink, Borderlands GOTY, Bastion, Portal 2, Mass Effect, Mass Effect 2, Humble Bundle (with Super Meat Boy), Torchlight, The Witcher, Dead Island. All have cost me roughly Ł60 or so. Which is just incredible value.
Some I've got and played before on console, but have always wanted the PC versions though and for 1-5 quid each, worth every penny.
“There are three things all wise men fear: the sea in storm, a night with no moon, and the anger of a gentle man.”