Super Mario Sunshine cheats and cheat codes for Gamecube

Ending bonus
Finish the game and save. Find the boat near the clock tower.
Pay 10 coins to travel back to the Airport level at the beginning.
Get the shirt and glasses for a different appearing ending.

Normal ending screen
Finish the game and collect all 117 Shine Sprites

Different ending screen - Show all characters
Finish the game and collect all 120 Shine Sprites
Get the shirt and glasses for a different appearing ending.

Get Yoshi
Accumulate 25 Shine Sprites. Go to Pinnal Park and finish Story #4 . 
You will jump back into  the town. The Mario imitator will appear 
with an egg. Chase him down to get Yoshi.

Wear sunglasses
Speak with the man wearing glasses on the beach in Dolphic Plaza or 
any other levels. 

Defeat enemies with Yoshi juice
Eat a fruits then spit out juice.

Yoshi's Spritzer Squirt
Press R, then hit the A button.

Easy cleaning
Perform a few spin jumps to cleaning Mario instead of taking a bath.

Prevent dying
When you die pause the game play and choose "Exit Area". You will be 
warped back to the start of the level, but you won't lose a life. 


Hidden moves:

Sprinkler Backflip: While spraying water forward, push the A button

Water Slide: Create a puddle of water in front of yourself, then do a 
head dive. Slide forward on your belly. To cancel the slide by pressing A. 

Sprinkler Water Spray: Perform a Spin Jump and hold R.

Spinning jump: Jumping and rotate the thumb-stick once in a circle 
to perform a spin.

Ground Pound: When falling from high places, push L to prevent 
losing health