lots of them ..
c64 (80s): bruce lee, pitfall, spy vs spy, boulder dash, last ninja 1,2,3, simcity, defender of the crown ...
pc (90s): doom 1,2 , quake 1,3, starcraft, warcraft, capitalism, wolfenstein 3d, defender of the crown, full throttle, sam & max hit the road, discworld, little big adventure, screamer, destruction derby, mortal 1,2,3 (2 was the nicest one), slipstream 5K
, ecstatica, duke nukem 3d, fury of the furries, dune 1,2, Leisure Suite Larry series and OMG the list would be too long ...
there were too many nice games. I think i didn't play this millenium, and i am not too convinced by newer games ... halflife2 seemed really nice although