In Buzz's level, the surrounding lava is the only fire that will hurt Buzz. Butt heads with him until he falls into the lava, then let Sheila do her part.
99 lives
Pause the game and press Right, Left, Right, Left, Up(4), Circle.
Extra hit points
Pause the game and press Circle, R1, Circle, L1, Circle, R2, Circle, L2, Circle.
Easy mode
Pause the game and press Circle, Square, Right, Left, Right, Square, Circle, X.
Hard mode
Pause the game and press Circle, Square, Right, Left, Right, Square, Circle, Square.
Big head mode
Pause the game and press Up, R1, Up, R1, Up, R1, Circle(4).
Flat mode
Pause the game and press Left, Right, Left, Right, L1, R1, L1, R1, Square, Circle.
Turn Spyro black
Pause the game and press Up, Left, Down, Right, Up, Square, R1, R2, L1, L2, Up, Right, Down, Left, Up, Down.
Turn Spyro blue
Pause the game and press Up, Left, Down, Right, Up, Square, R1, R2, L1, L2, Up, Right, Down, Left, Up, X.
Turn Spyro green
Pause the game and press Up, Left, Down, Right, Up, Square, R1, R2, L1, L2, Up, Right, Down, Left, Up, Triangle.
Turn Spyro pink
Pause the game and press Up, Left, Down, Right, Up, Square, R1, R2, L1, L2, Up, Right, Down, Left, Up, Square.
Turn Spyro red
Pause the game and press Up, Left, Down, Right, Up, Square, R1, R2, L1, L2, Up, Right, Down, Left, Up, Circle.
Turn Spyro yellow
Pause the game and press Up, Left, Down, Right, Up, Square, R1, R2, L1, L2, Up, Right, Down, Left, Up(2).
Turn Spyro purple
Pause the game and press Up, Left, Down, Right, Up, Square, R1, R2, L1, L2, Up, Right, Down, Left, Up, Right.
Sparx treasure finding
Pause the game and press Right(2), Left(2), Right(2), Left(2), Circle(3).
Squish skateboard
Pause the game and press Up(2), Left(2), Right(2), Down(2), Circle, Square.
Crash Bash demo
At the title screen, hold L1 + R2 and press Square.
Skateboard Flips
On a skateboarding mini game (e.g. Sunny Villa), when going jumps, press x to get extra height and then press triangle and use the directional buttons to direct your flip.
Beat Spike
Although it seems impossible (for most gamers, anyway) here is how you beat Spike. At the start, ram the red balls Sgt. Byrd drops down into the arena at Spike. After about 3-4 hits he'll crack the floor. Then Sgt. Byrd will start dropping red and blue crystals. Red=1 shot superflame powerup. Blue=a bomb. Use these until Spike is dead.
Go to the pause screen then press left, right, left, L1, R1, L1, R1, triangle, o, o. Then get of the pause screen and he will be thin as paper.
No Aligators
When your facing sleepy head,the wizard in Spooky Swamp,when he's ready to launch an aligatr run up to him and he'll bump you back to the arena, but he'll skip to the bomb.