Metacritic has (currently) 3020 PC games with scores, ranging from 96 (Half-Life, HL2, Bioshock, and... Out of the Park Baseball 2007! )
Just got everything from the latest Humble Bundle.
BF3, Mirror's Edge, Dead Space 1+3, Sims 3+Starter Package, Crysis 2, Burnout: Paradise, and the new Medal of Honor.