Tweed
Professional Kobold
Gauntlet: Dark Legacy is good alone and great with friends. Like others have said Hunter: The Reckoning and Redeemer are excellent too.
If you're thinking of Sega GT it's not that good, but it was free along with Jet Set Radio Future when they made the smaller Xbox. Best thing to be said for Sega GT is the cars themselves, otherwise there's no visual damage of any kind and float arcade controls that are much worse than PGR.Games with Sega in the title (there's a good racing title, can't remember the name,