For all who want more informations of this champion: http://www.youtube.com/watch?v=Q9m48jiVWL4

Backstab (Passive): Shaco deals 20% bonus damage when he attacks from behind.

Deceive (Q): Shaco teleports a little bit fowards and is invisible for a short time.
When he attacks something it's gonna be a critical hit.
A tip: His Q is VERY good to escape, but also costs a lot of mana, so use it clever!

Jack in the Box (W): Shaco's place a Jack in the Box with 150 health. When a minions or an ennemy come close to it, it will fear the target and deal magic damage over 5 seconds.
A tip: Shaco's Jack in the Boxe's are very strong in early game! You can use it for very strong first-blood-tricks.

Two-Shiv Posion (E): Passive: While it's ready to cast, he can dodge monster ( or minion ) attacks sometimes and slow an ennemy when attack him. ( 20-30% chance )
Active: Shaco trows a dagger to an ennemy target which deal magical damage and slows the target.

Hallucinate (R) (Ultimate): Shaco creates a clone of himself which deals 75% of Shaco's damage and receives 50% increased damage ( half damage to turrets and inhibitors ). On death the clone deals magical damage to all nearby ennemies. Last up to 18 seconds.
A tip: You can use it to dodge tower shots or skill shots!

The Shaco firstblood-trick: http://www.youtube.com/watch?v=X-ZXm6-Y-Fw

An epic Shaco escape: http://www.youtube.com/watch?v=iVW2CotrmnA

A let's play of Shaco in the Jungle ( sorry that it's german, but an english lp doesn't eixst ): http://www.youtube.com/watch?v=yCQG1lYvmVo

Don't forget:
USE YOUR BACKSTAB ( SHACO'S PASSIVE ) AS OFTEN AS POSSIBLE TO DEAL TONS OF DAMAGE!!!!!!

IMPORTANT:
I DON'T MADE THIS VIDEOS AND DON'T USE THE RIGHTS!