Ok.... lets see whats on the list of my fave games...
Grand Theft Auto 1 and 2 - Simply amazing
GTA: Vice City - Probably the best out of the GTA 3 series.
Grim Fandango - One of the most memorable games I've played. Simply fantastic.
Colin Macrea Rally 05 - Another great game. "HARD LEFT, NO! I MEAN RIGHT.... ahhh crap I crashed into a tree..."
Half Life 2 - I love that crow bar.
Quake 3 Arena - A brilliant multiplayer FPS, which I thought was far better than any of the Unreal Tournament games. Far more dark cyber punk look to the game, than UT could ever do.
System Shock 2 -

OMG!!! YOU GOTTA PLAY THIS GAME DAMIT!!!!
Roller Coaster Tycoon - aahh brings back memories it does... I loved building a rollercoaster than making it crash killing innocent civilians...
Hitman - Gritty, dark, silent and sublime.
Street Fighter 2 Turbo - The best beat 'em up game ever made in the world ever.
Super Mario World - The times I spent playing this game sat on the floor in front of the TV.... those were the good old times.
Mario 64 - "Itsa me... MARIO!"
Mario Kart- Not quite Colin Macrea, but helluva lot of fun!
Star Wing (Star Fox) - Another classic game, and also the first game ever to use 3D Psuedo graphics for the SNES.
Freelancer - A very good open-ended space shooter, although the mission spine was short and a little repitive.
Goldeneye - DAMIT!! That was great, I tell ya! Although it really pissed me off when EA decided to do Goldeneye: Rouge Agent.
Champion Manager 3 - lol.... quite an old old game, but I had a lot of fun playing it.