There are also four basic trick moves that are not listed below that can be performed by pressing one of the turbo buttons and Square.

Backtrack: Hold L2 + R2, then press Square.
Breaking You Off: Hold R1 + R2 + L2, then press Square.
Change Up: Hold L1 + R2, then press Square.
Cyclone: Hold L1 + L2 + R1, then press Square.
Double Cross: Hold L1 + L2 + R1, then press Square.
Downshift: Hold L2 + R1, then press Square.
Off the Chain: Hold L1 + R1, then press Square.
Slip 'n' Slide: Hold L2 + R1 + R2, then press Square.
Streetwise: Hold L1 + L2, then press Square.
Hint: Advanced trick dunks:
There are also four basic trick moves that are not listed below that can be performed by pressing one of the turbo buttons and Circle.

Around The World: Hold R1 + R2 + L1, then press Circle.
Backbreaker: Hold L2 + R2, then press Circle.
Dinner's Served: Hold L1 + L2 + R1 + R2, then press Circle when heading straight towards the hoop while inside the freethrow line.
Dominator: Hold L1 + L2, then press Circle.
Dunkalicious: Hold L2 + L1 + R2, then press Circle.
Groundshaker: Hold R1 + R2, then press Circle.
Hammerdown: Hold R1 + L1, then press Circle.
Highrise: Hold R2 + L1, then press Circle.
Special Delivery: Hold L2 + L1 + R1, then press Circle.
Superfly: Hold L2 + R1 + R2, then press Circle.
Wake Up Call: Hold L2 + R1, then press Circle.