I agree to whoever mentioned Alice in Radioland. I love that group when it comes to snowboarding, particularly "Radiosong", probably because of Isenseven. I tend to listen to a lot of snowboard-movie music songs as well. Usually electronica, though I do have the occasional rock/punk song in there. As well as mellow music .. hell, I guess it just varies.
Some of the groups that're on my "playlist" are Alice in Videoland, Metric, The Faint, Shiny Toy Guns, Tsunami Bomb, Yeah-Yeah-Yeahs, Peaches, etc. Lots of girl bands, actually. Go figure.