Go Pro Video
Specializes in capturing extreme sports and events on video. Also offers extreme video travel packages that include travel and lodging to prime locations.
http://www.goprovideo.com/

Re:Evolution of Sports
TV show highlighting Red Bull extreme sports events featuring adventure racing, kayaking, paragliding, kitesurfing, BASE jumping and freestyle motocross.
http://www.reevolution.tv/

Xtremeride
Features downloadable webisodes and trailers of snowboarding, snowmobiling, skateboarding, BMX, wakeboarding, motocross videos.
http://www.xtremeride.net/