By Danny Agnew Recently, your correspondent was afforded the opportunity to join the Burton team for a screening of the film Dear Rider, the new HBO Sports documentary chronicling the life and times of the late snowboarding pioneer Jake Burton. It’s a beautiful film, a testament to the passion and determination of a true visionary, and a shining example of how the dreams of one person can eventually have a profound effect on the lives of millions. I’m not ashamed to say that I got a little misty during the viewing — and watching it with the Burton team, it struck me that it is a truly unique e…