This hasn't been gotw already? What a tragedy!
Hands down, fantastic game that makes a DC a must own. I loved the game, from beginning to end. The controls take a little getting used to - and a lot of people will point to the controls being the downfall of the game - after lots of practice, it wasn't much of an issue (except when you had to tag gangs, that's when collision detection needed to be tweaked - even then, practice makes perfect, and compensates for it).
Music was fantastic too.
I really can't say enough about the game. The game to me is kind of like how Nights was for the Saturn - an experience that made buying a Dreamcast a priority (because, up until then, my Saturn was enough).