They Still Call Me Bruce 1987

Bruce Won arrives in America in search of an American G.I. who saved his life in the Korean War. He meets an orphan boy and together they land themselves in a string of outrageous situations. This high-strung farce culminates when a case of mistaken identity leads a gang of thugs to think Bruce is a karate master. They arrange a nationally-televised match which pits our hero against a monstrous brute, and Bruce is beaten to a bloody pulp...