If you aren't familiar with speed running, it's a community dedicated to completing games using various methods as quickly as possible. A small but extremely competitive community of speed runners have been tackling the All-Peak Race in SSX for the last 6 months or so, and you'd do yourself a favor by checking out their records. This kind of competition is always amazing to watch and frequently results in great leaps in technique and jaw-dropping records. For the group of runners over at Twitch, they have created a subset of rules called "NMG" (No Major Glitches), which bans the majority of exploits that you can perform in SSX 3.
You can check out their scoreboard over at SpeedRun.com