Guitar Hero II

Enter the following on the main menu

Y=Yellow, B= Blue, O=Orange,R=Red

Air Guitar: YBYOYB

Hyperspeed: BOYOBOYY

Eyeball Head Crowd: YOBBBOY

Flaming heads: OYYOYYOYYBYYBYY

Monkey head crowd: OYBBYOBB

Perfomance Mode: BBYBBOBB

Unlock all songs: BYOROYRYRYRYRYRY