At the 'Main' menu go to 'Options' and select 'Cheat Codes' and type in 'NOHANDS' (without the quotes) to unlock ALL of the handlebars available in the game.

Below is a list of the various moves that can be performed in the game. 360:
Press Left + Right + R1.

Backflip:
Press Up + Down + R1.

Can Can:
Press Down + Triangle.

Disco Can:
Press Left + Triangle.

Double Can:
Press Up + Circle.

Double Grab:
Press Right + Circle.

Hart Attack:
Press Down + Circle.

Heel Clicker:
Press Left + Circle.

Indian Air:
Press Up + R1 + Triangle.

Ninja Nac:
Press Right + R1 + Triangle.

No Footer:
Press Down + R1 + Triangle.

Saran Wrap:
Press Right + Triangle + Circle.

Side Saddle:
Press Left/Right/Down + Triangle.

Rock Solid:
Press Left + R1 + Triangle + Circle.

No Handed Disco Can:
Press Left + R1 + Triangle.

Superman Seatgrab:
Press Down + R1 + Triangle + Circle.

9 O'clock Indian Air:
Press Up + Triangle.

9 O'clock Nac:
Press Right + Triangle.

Nothing:
Press Up + Circle + R1.

Pendulum:
Press Right + Circle + R1.

Rigomortis:
Press Down + Circle + R1.

Ruler:
Press Up + Triangle + Circle.

Shaolin:
Press Down + Triangle + Circle.

Sterilizer:
Press Up/Right + Circle.

Stripper:
Press Left + Triangle + Circle.

Super Can:
Press Up + R1 + Triangle + Circle.

No Hander:
Press Up + Triangle.

Rodeo:
Press Left + Circle + R1.

Taunt:
Press Down + Circle.

At the 'Main' menu go to 'Options' and then 'Cheat Codes' and enter the password 'CRAZYLIKEA' without the quotes. When you have entered the password click 'Done' to enable the effect.