?According to legend, we are informed at the outset of Sumo East and West, the origin of Japan was the result of a sumo match between the gods. Cut to the film's opening shot—sumo belts flapping on a clothesline like gigantic bikini underwear—and it's clear that this documentary (PBS, June 8, 10 p.m.) will take a less-than-reverent look at the 2,000-year-old sport. But the film is also less than satisfying at times. When Wakamatsu Oyakata, a coach and elder, says, "Sumo embodies all that is good in ancient Japanese culture," you may wish for more explanation. It is largely through the eyes of the non-Japanese—such as Manny Yarbrough, a 380-pound lineman from Morgan State who added 370 pounds to become a champion—that we enter the sport's insular world. Shot partly in Japan, the film offers a cultural lesson: With losers in American sports there's "cussing and kicking of sand," says Wayne Vierra, a former pro from Hawaii. "But in sumo...even if you lost, you know in your heart you're a champion because you trained hard."