Favorite racing video games

[Sin After Sin]

What are your favorite racing video games?

I'm going to list one for each system I've played a racer on (you don't have to list as many as I did):

Atari 2600: Enduro
NES: R.C. Pro-AM
Sega Master System: Enduro Racer
Sega Genesis: Outrun
Super NES: F-Zero
Nintendo 64: Mario Kart 64
PlayStation: Gran Turismo 2
Dreamcast: 4x4 Evolution
PS2: Burnout 3: Takedown
Gamecube: 4x4 Evo 2
Xbox: ***** Motorsport
Xbox 360: Burnout Revenge
Game Boy: Super R.C. Pro-AM
Game Boy Color: Top Gear Pocket 2
Game Boy Advance: Need For Speed Most Wanted
Nintendo DS: Mario Kart DS