Rock Band 2 (PS2)

Unlock Awesomness Detection:
At the Extras/Modify Game/Enter Unlock Code screen, enter Yellow, Blue, Orange, Yellow, Blue, Orange, Yellow, Blue, Orange as a code.

Unlock all songs:
At the Extras/Modify Game/Enter Unlock Code screen, enter Red, Yellow, Blue, Red, Red, Blue, Blue, Red, Yellow, Blue as a code.