Flat Out

The only racing game stupid enough to need extensive ragdoll physics. Which it then goes on to abuse by making you ragdoll out the front of your car every time you ding the curb.

The DRNuK Smurf is incredibly good at this game (and racing games in general) - it takes the combined efforts of Auron, X-Sane and Shadow to beat him in a race.

It's probably also fair to say that there are one or two bugs left in the multiplayer.