Mine are in no particular order.
Resident Evil (PS1)
Gran Turismo 2,3 & 4(ps2)
RalliSport Challenge 2 (XBOX)
Project Gotham Racing 2 & 3 (xbox/X360) ( 2 more fun online but 3 is awesome with Racing wheel)
TOCA Touring Car Champ (PS1)
TOCA Race Driver 1,2,3 (xbox)
Forza Motorsport (xbox) Faultless stunning game.!
Test Drive:Unlimited (X360) Frankly Unbelievable Fun and scale to this game. Quite a looker too.
Pool Shark 2 (xbox)
World snooker championship 2007 (X360) Awesome game and i made a 147 on it 4 days after release.
Was one of the first too.
HALO:Combat Evolved(xbox)
My main favourites, must be more but cant think right now.