"Ip Man": A dazzling martial-arts epic: I'm not qualified to judge whether the Hong Kong action flick "Ip Man" belongs among the top martial-arts films ever made, an opinion that's been gaining credence as the movie bounced around the world over the last two years. But there can be no doubt that director Wilson Yip has crafted a gripping, rousing, beautifully structured yarn, built around a calm but charismatic star performance by Donnie Yen and magnificent action sequences choreographed by the legendary Sammo Hung.