By Brad Miner, The Catholic Thing - Particularly offensive scenes open Father Stu, the new film about Stuart Long, a boxer of apparently questionable morals who became a Catholic priest. Mark Wahlberg plays our hero. In those early scenes, Mel Gibson, as Stu’s father, Bill, taunts the boy Stu (Tenz McCall) with a monologue about excretion, which transitions into scenes from the grown Stu’s amateur boxing career.