What's your favorite PC only RPG?

Arcanummmm!! Arcanum Arcanum Arcanum!!!! And Planescape Torment, and Vampire Masquerade, and both (yes BOTH!) Deus Exs.

I think I'm going to re-install that damn boring-ass Arcanum game again and get bored after a few hours because I've done it too many times (although the first (second, actually) time I played it it was mindblowingly enjoyable for some reason : p) 

vampire the masquerade: bloodlines is the best roleplaying game i've ever played - by a long, long long way

mainly because it's a game with real roleplaying, everything - from the combat to the skill system - defers to the roleplaying

plus malkavian chicks are hot 

Hmmm... Morrowind closely followed by masqurade.timma25

sacred!! FTW!skyyfox1

I have no idea at this point. There hasn't been a really good rpg in years, and all the ones I used to love are quite old now.