20 Celebs Who Went Crazy Because Of Their Fame

4. Mel Gibson

Mel Gibson made headlines around the world when he lost all touch with reality and succumbed to alcohol. His struggles with alcohol came to a forefront with a number of drunken rants, threats and anti-Semitic remarks that all but blacklisted the famed actor. He checked into rehab and has struggled to bounce back from his fall from grace. In 2011, he attempted to make a comeback with The Beaver, but the movie was a flop.