Here's your clue...the answer will be posted in the comments section of this post:
He was the only actor in Hollywood who posed for more mug shots than publicity photos. The day his mother killed herself in 1960,  was arrested for breaking down a woman's door and assaulting her boyfriend.
His off-screen antics also continued, and in 1948 he served three months for breaking a student's jaw. Throughout the 1950s, he faced a string of charges from kicking a policeman while drunk and disorderly to hitting a waiter in the face with a sugar-bowl and attempting to choke the life out of a cab driver."
Hint: It ain't Shia Leboeuf!