Tony Hawk's Underground 2 Cheats

Jesse James
Walk around the first level (not the training level) and you will find someone by a building who wants a drink. He will tell you to go downstairs to a bar next to him. When you get down there, Jesse James will talk to you.

Message from Steve-O
After you complete all the goals for the first level or get the correct amount of points, you will see an FMV sequence where Bam will eliminate Burnquest from Tony's team. Afterwards when you get to Spain, Steve-O will send you a text message saying that he wants to be on your team. You can now play as him. He rides a mechanical bull.

Skatopia level: Rope ride
Grab on to what looks like a jet pack and it will take you on a very fast rope ride.

Skatopia: Easy Bomb Box mission
The easiest way to complete the Bomb Box mission in Skatopia is to Flip Trick onto one of the lower boxes and Caveman the rest in that row. Just jump from box to box after getting off your board, but make sure to do one row at a time.

Zoo level: Unlock aquarium
Jump on the house near the elephant then hop on the elephant's back. He will get mad and crush the aquarium door.

R/V halfpipe
To unlock the R/V halfpipe and that mission for your character, play as Jesse James and jump over three cars.

Star Wars Kid
In the Boston level, ollie through the glass windows on the building one or two to the left of the one where Ben Franklin is hiding. This puts you in a room with a TV on the wall. Stand in front of the TV and the star wars kid will get up and start yelling. Press CIRCLE and he will show you his skills.