College Slam

Hidden Teams
At the Start Screen press Left, Up, B, Up, Down, Up, Right, C

Whirlwind Option
At the team match-up screen rotate your joystick in a clockwise 360 motion untill the game begins. You will now have the whirlwind option for the entire game. The trick does not work in tournament mode though.

Power up Dunks from D.J.
Press Up and Down 5 times at the versus screen.