The game has been reviewed for the xbox 360, and received pretty good scores (Gamespot 8.4, IGN 8.0). However, the PS3 version does not have an online mode.
I enjoy it as well. Picked it up off Goozex about 2 months ago (and it seems to keep going up in point value on there lately). My friend used to have the Dreamcast version, so I found him a copy and he enjoys it too. I agree online would be nice, but it's still fun.