Which games should i get for ps3 sports or racing games?

I am getting a ps3 soon and was wondering which game should i get i am a sports and racing game fanatic. Thanks for all of your input:)

if your a basketball fan you must get NBA 2K8

isnt nba live suppose to be better this year

If you like racing games, you can't go wrong with Motorstorm.

I think it's the best racing game on the PS3.