If the game is left idle on the skater selection screen Bam Margera will punch himself in the face.
Master Code: To unlock everything the cheats , videos and more, enter this cheat code watch_me_xplode and you would unlock everything.
In the "Kona" level, Tony Hawk mentions a "Magic Bum from Venice", and you have to ollie (jump over) the bum five times. Each time you do, he'll find another spot, where you'll have to ollie him again. This references the California level in Pro Skater 2 where you have to do the same thing. Also, it is revealed here that the bum's name is, indeed, "Ollie".