THPS4 Tricks List
Tricks listed are for Custom Skater (one you created yourself). Other skater configurations will differ slightly.
Controller config
Gamecube: 
Flip 
Grab 
Grind / Lip Trick
Xbox: 
Flip 
Grab 
Grind / Lip Trick
PS2: 
Flip 
Grab 
Grind / Lip Trick
General
Manual
Nose Manual
+ OLLIE: Boneless
R BUTTON: Revert
Gamecube (L+R), PlayStation2 (L2 or R2): Spine Transfer
OLLIE, +GRIND: Wallride (when approaching wall)
Skitch (when behind a vehicle)
Flips
Kickflip
Heelflip
Impossible
Pop Shove-It
Hardflip
Inward Heelflip
Varial Kickflip
Varial Heelflip
FLIP FLIP: Double Kickflip
FLIP FLIP: Double Heelflip
FLIP FLIP FLIP: Triple Kickflip
FLIP FLIP FLIP: Triple Heelflip
Grabs
Melon
Indy
Nosegrab
Tailgrab
Japan
Madonna
Benihana
Airwalk
Lip Tricks
Varial Invert to Fakie
BS Boneless
FS Noseblunt
Invert
Andrecht Invert
The Switcheroo
Gymnast Plant
One Foot Invert
Grinds
(no direction): 50-50
Noseslide
Tailslide
Nosegrind
5-0
Overcrook
Crooked
Feeble
Smith
Nosebluntslide
Bluntslide
Flatland
GRIND + GRIND: Pogo
GRAB + GRAB: Handstand
FLIP + FLIP: Wrap Around
Specials
GRAB: McTwist
GRAB: 360 Varial McTwist
FLIP: Barrel Roll
GRAB: Indy 900
GRIND: Darkslide
FLIP: Semi Flip
FLIP: Misty Flip
FLIP: Kickflip Underflip
LIP TRICK: Heelflip FS Invert
GRIND: Ghetto Tag
FLIP: Sit Down Air
GRAB: 900