Mel Gibson. He became my hero after seeing his movies. The first being "The Patriot" a movie set during the American Revolution. His war movies impressed me the most but I still enjoyed his other movies.
However, I started to slowly lose interest in him over the years and he lost MAJOR respect from me a few summers ago when he was caught drinking and driving, went on an anti-Semitic rant and made a sexist comment to a female police officer at the police station.