Sports games are pretty much all I play on consoles.
I can't speak for the basketball games...but both the EA and 2K hockey franchises are quite good. EA is more of a hockey simulation, 2K is more arcade-y which has it's own kind of fun.
I don't know if you like BLITZKRIEGball (football that you play with your hands), but the NCAA franchise from EA is the best football simulation in existence. And the superstar mode (where you are a single player and not the whole team and whatnot) is really fun.
edit- Formula One Championship Edition is as good a racing game as you find these days.
[Edited by Dhampy, 9/10/2009 4:27:08 PM]