In addition to boasting one of the most astonishing opening sequences in the history of extreme-sports filmmaking, Billabong Odyssey offers a breathtaking survey of big-wave surfing at a pivotal stage in its evolution. With the advent of Jet-Ski Waverunners used for "tow-in" access to gigantic waves that paddle-surfers could never reach, this three-year, globe-trotting quest for the world's biggest waves is nothing less than spectacular. As documentaries go it's a bit cruder than 2003's other surfing movie, Step Into Liquid, and many of the same world-class surfers appear in both films (including 49-year-old Ken Bradshaw, still going strong). But Billabong is unrivaled in its abundance of jaw-dropping footage--most of it shot from helicopters hovering in close proximity--showing the sheer, terrifying scale of breaking "tubes"--some reaching 100 feet--at the most challenging big-wave locations on the planet, including Maverick's at Santa Cruz, California; Cortes Bank off the Pacific Coast; "Cyclops" in Australia; Mundaka, Spain; and the treacherous "Jaws" reef on the coast of Maui, Hawaii.