2Xtreme 100% codes.

The tricks are:
Easy [] /\ 50 pts
Medium [] O X 100 pts
Medium [] O /\ 100 pts (its cool to see the differnt tricks.)
Hard [] X /\ O 200

If you print this on your page This next info is useless but cool.  I'll
update you when I find out the rest

Snowboard
Easy: Grabs bottom of board
Medium1:??
Medium2:??
Hard: Flips

Bike
Easy: does a split
Medium1:360
Medium2:??
Hard:holds on to handle bars and spins bottom of bike.  (awesome)
Dont try this without going over the jump at max speed you'll fall!

Rollerblades
Easy:?? 
Medium1:??
Medium2:??
Hard:??

Skateboard:
Easy:?? 
Medium1:??
Medium2:??
Hard:??

I'll know most of these other tricks before the knew year.