HBO’s Momentum Generation doesn’t premiere until mid-December, but NewportFILM has an advance preview of the surf documentary, directed by brothers Jeff and Michael Zimbalist. The inspirational film looks at a gaggle of competitive teenagers who lived in Hawaii in the late eighties, surfing as a break from their mostly joyless home lives. That generation (Kelly Slater, Shane Dorian, Kalani Robb, etc.) brought fame to the sport, and with it a lot of money and drama, as lifelong friends were pitted against one another by sponsors.