Update: I was unfortunately not aware of Shamus Young's severe criticism of Fallout 3 available here to link in the original piece and I regret that. It dovetails rather nicely with what I've written and it's much better executed than my piece. I strongly recommend anyone...
This was the first snowboarding game I've ever played, and I really liked it. You are treated with amazing graphics (for a PS2), cool tricks, some awesome sound (THX certifited) and a decent soundtrack. There are 3 peaks to conquer, with each peak having its own races and freestye courses, and in freerides you can explore these courses and entering some "BIG Challenges" with various assignments to complete, to be honest, I didn't like these challanges... The controls are fairly easy to master, but having played a lot of Tony Hawk games, it was hard to make this "click" in my mind, eg: I tend to keep the X button always pressed, but this makes you way harder to manouver.
While going down the stunning mountain you nail off some amazing moves that will definitely kill you in real life if you try to do them yourselve. While doing tricks, you fill up your adrenaline meter, that when full makes you do even crazier tricks (until you have the Super Ubers !!!). Whilst being in a freeride, you can accept some challanges, but I really didn't like these (so I skipped this).
There are some minor issues in the game (there really should have been a tutorial and the mixing of the musictracks can get way off), but they don't stand in the way of the gameplay. The only thing worth mentioning is how you complete the game, whenever you end up in the top 3 of a race/freestyle, a box next to the race is checked, giving little motivation to get gold in each race/freestyle. It's also odd when you have completed every race and freestyle (I didn't see credits, and I don't have the 2 movies from my rider with whom I've completed the game).
Anyway, if you like boarding (snow and skate) games, you really should get this one, it's not perfect, but its just so awesome to play !