Enter these case-sensitve cheats to activate them:

• seeall: Unlocks all posters and photo slots.
• watchall: Unlocks all videos.
• hearall: Unlocks all songs.
• sugardaddy: Gives the user $1,000,000.
• dudemaster: Unlocks all riders (and their bikes).
• garageking: Unlocks all bike parts.
• johnnye: Unlocks all costumes for all riders.
• universe: Unlocks all levels and events.
• fleximan: Unlocks all special stunt slots.