Special meter always full:
Pause the game, then hold L and press A, Y, B, B, Up, Left, Y, X.

Full stats:
Pause the game, then hold L and press A, Y, B, X, Y, Up, Down.

Turbo mode:
Pause the game, then hold L and press Down, X, Y, Right, Up, B, Down, X, Y, Right, Up, B.

Blood mode:
Pause the game, then hold L and press Right, Up, X, Y.

Kid Mode:
Pause the game, then hold L and press B, Up, Up, Left, Left, B, Up, Down, X.

Jet Pack Mode:
Pause the game, then hold L and press Up, Up, Up, Up, A, X, Up, Up, Up, Up, A, X, Up, Up, Up, Up.

$5000:
Pause the game, then hold L and press A, Down, Left, Right, Down, Left, Right.

Unlimited balance:
Pause the game, then hold L and press Right, Up, Left, X, Right, Up, X, Y.

Disco mode:
Pause the game, then hold L and press Down, Up, X, B, Up, Left, Up, A.

Wireframe mode:
Pause the game, then hold L and press Down, B, Right, Up, X, Y.

100,000 Points In Competition:
Pause the game, then hold L and press X, B, Right, X, B, Right, X, B, Right.

Finish the game:
Pause the game, then hold L and press B, Left, Uk, Right, B, Left, Up, Right, A, B, Left, Up, Right, B, Left, Up, Right.

Mirror mode:
Pause the game, then hold L and press Up, Down, Left, Right, Y, A, X, B, Up, Down, Left, Right, Y, A, X, B.

Slo-Nic mode:
Pause the game, then hold L and press B, Up, Y, X, A, Y, B.

Unlock all gaps:
Pause the game, then hold L and press Down, Up, Left, Left, B, Left, Up, Y, Y, Up, Right, X, X, Up, A.

Unlock all levels:
Pause the game, then hold L and press Up, Y, Right, Up, X, Y, Right, Up, Left, X, X, Up, B, B, Up, Right.

Skip To Restart:
Pause the game, then hold L and press X, Y, Right, Up, Down, Up, Left, X, Y, Right, Up, Down, Up, Left, B, Up, Left, Y.

Unlock all secret characters:
Pause the game, then hold L and press X, B, Right, Y, Circle, Right, B, Y, Right, X, Right, Up, Up, Left, Up, X. .

Unlock cheats:
To unlock the following cheats you have to clear every goal and collect all the cash on every level and competition with any character except Officer Dick, Tony Hawk, or Spider-Man.
The cheats are unlocked in the following order:

1st time Unlock Officer Dick
2nd time Skip to Restart
3rd time Kid Mode
4th time Perfect Balance
5th time Always Special
6th time Max stats
7th time Weight mode
8th time Wireframe mode
9th time Slow-Nic mode (slow motion tricks)
10th time Big Head mode
11th time Sim Mode (realistic physics)
12th time Smooth mode (no textures)
13th time Moon mode (low gravity)
14th time Disco mode (disco lights)
15th time Level Flip (mirrored levels)

Unlock Neversoft Bail video:
Get 3 Gold medals with Officer Dick.

Neversoft skaters:
Up, Square, Square, Triangle, Right, Up, Circle, Triangle. Then create a skater and name it like any of the members of the Neversoft development team.

Unlock Spiderman:
Beat the game with 100% with a created skater.

Unlock The Spiderman Skate video:
Get 3 Gold medals with Spiderman.

Unlock Private Carrera:
Execute all the gaps in each of the regular levels.

Unlock the Neversoft Makes video:
Get 3 Gold medals with Private Carrera.

Unlock McSqueeb:
Beating the game with 100% with Tony Hawk.

Unlock McSqueeb video:
Get 3 gold medals with McSqueeb

Unlock Chopper Drop: Hawaii level:
Get 3 Gold medals with every character.

Unlock Skate Heaven level:
Complete all objectives in career mode with the original characters, spider man, office dick & a custom skater.

Hints:
If you go to the blue tree on the french competiton level there is a piece of wood holding it up drive to it and knock it down and it will give you a secret area behind it.

At the school at the very end near T.C roof gap there is a lampost knock it down and grind on it and the school doors will open

On the ventura level there is a light above a wave ramp near the start grind on it to open the gates at the very left and to open the gates at the right grind on the pole joining the half pipe at the back

On mullet falls there is a helicopter grind on its propelers to open up the back wall and at the small halfpipe at the front there is a plane front at the end grind along it to open the front wall.

Open gym doors in school:
More efficient way to open the gym doors in the school. Just get the the "Opensezume" rail before the timer gets to 1:40 and grind it. You'll hear the bell ring and you can get into the gym anytime you want. Remember to save!