There are a lot of great racing games available on Xbox 360, but it really depends on what kind of experience you're looking for. If you're interested in realistic and intense racing, you might want to try "Forza Motorsport 4" or "Project Gotham Racing 4." If you're looking for something more lighthearted and fun, "Cars 2" or "Sonic & Sega All-Stars Racing" might be more your speed. There are also plenty of classic arcade-style racing games available, like "Need for Speed: Hot Pursuit" and "Blur."