One of the greatest four-player console games ever.

User Rating: 9.2 | Simple 2000 Ultimate Vol. 28: Bousou! Kenka Grand Prix, Drive to Survive PS2
Drive to Survive (aka Mashed in Europe and Australia), is a game which is definitely best enjoyed with other players. The gameplay is amazingly addictive. I have owned the game for over a year now and I still love playing it with friends. The fact that the review does not even touch on the benefits of multiplayer and gives it a 2.3 is saddening. I had a huge rant about it here:
http://au.gamespot.com/ps2/driving/mashedfullyloaded/show_msgs.php?topic_id=m-1-33172525&pid=926909
I highly recommend this game, but make sure you play it 4 players before judging it. It's apparently $10 in the US. If you find it, and you have four controllers and three buddies it is a must buy.