Tony Hawk's Pro Skater 3 Codes -

Every FMV sequences:
Enter the options menu, then select "Cheats". Submit the case sensitive code Rollit as a case-sensitive code to unlock all FMV sequences.

Level select:
Enter the options menu, then select "Cheats". Submt the case sensitive code stiffcomp to unlock all levels for the current skater.

Every character:
Enter the options menu, then select "Cheats". Submt the case sensitive code teamfreak as a case-sensitive code to unlock all characters. The sound of money being collected will confirm correct code entry.

All created skaters:
Enter the options menu, then select "Cheats". Submt the case sensitive code WeEatDirt as a case-sensitive code to unlock all created skaters.

Full stats:
Enter the options menu, then select "Cheats". Submt the case sensitive code juice4me for maximum stat points for the current skater..

All decks for current skater:
Enter the options menu, then select "Cheats". Submt the case sensitive code neverboard to unlock all decks for the current skater.

Game developer created skaters:
Submit one of the names below at the create a skater screen and their stats will appear. Certain names are those of children of the development team. 

Aaron Skillman (or Aaron, Skillman, or ARS)
Alan Flores
Andrew Rausch (or Jujy)
Andy Nelson
Brian Jennings (or BDJ or Brian)
Captain Jennings (or Cap'n Jennings or Capn Jennings)
Chad Findley (or Stallion or Doofus)
Chris Glenn
Chris Rausch (or Team Chicken, CJR, or Rausch)
Chris Ward
Connor Jewett
Darren Thorne (or Darren or Thorne)
Dave Cowling
Dave Stohl
Edwin Fong (or Maya's Daddy)
Gary Jesdanun (or Garvin or Garvin Jesdanun)
Henry Ji
James Rausch (or My Jamie)
Jason Uyeda
Jeremy Anderson
Joel Jewett
Johnny Ow
Junki Saita (or Kage)
Kevin Mulhall (or Guilt Ladle)
Lisa Davies
Mark Scott (or Hi Ben)
Matthew Day
Mick West
Mike Ward
Nicole Willick
Noel Hines (or Noel or Hines)
Nolan Nelson
Paul Robinson
Pete Day
Rachael Day
Ralph D'Amato
Ryan McMahon
Sandy Jewett
Scott Pease (or by entering Scott Pease, Spease, or Cheesy Peasey)
Steve Ganem
Steven Rausch (or by entering Wevenowski)
Trey Smith
William Pease (or by entering Wild Bill)

Tony Hawk's sons as created skaters:
Enter Riley Hawk or Spencer Hawk as a name at the create a skater screen and their stats will appear.

Hidden created skaters:
Enter one of the following names at the create a skater screen and their stats will appear.

062287
80's Mark
Braineaters
Crashcart
DDT
Eastside
Frogham
GMIAB
Gorilla
Grass Patch
Mini Joel
Pimpin Frank
Rastapopolous
Skillzilla (or by entering Gi Skillz)
Stacey D