If there were no The Mystery of Chess Boxing, you probably would be able to fuck with the Wu-Tang Clan whenever you felt like it. The film, about a badass mother-fucker named Ghostface Killah, is the source document of the Clan for good reason: It's one of the finest kung fu films put to celluloid. And the Grand Illusion is pairing it with Invincible Pole Fighter, possibly the best Shaw Brothers grindhouse joint ever (due, as the Abbot says to the IPF, to the "excellent poling!"). (Grand Illusion, 1403 NE 50th St, 523-3935. 7 pm, $16.)