To unlock some mini-games (the ones from Moto GP and a couple others), go into options menu and watch the text (not video) credits. Scroll down until you get to the credits for the mini-games. When it appears onscreen, press A. To confirm correct code entry, the screen with the "Mini Games" title will have the "A" in "Games" change to resemble that found that controller button.
Submitted By Scott
Pink Elephant Bike
To have a bouncy pink bike, simply enter the text "kingpin" on the side of your custom bike, under the "logo" part. This cheat will also work online!
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