Let's start this one off with one of the most ascetic men in Hollywood. Vincent Kartheiser, most famous for playing Pete Campbell on Mad Men, lives in a one-room house in Los Angeles with no furniture and doesn't even own a car. He's the only person in the whole city who takes the bus. After realizing that he really didn't need all of the stuff that accompanies celebrity life, Kartheiser began gutting his house, taking all of his possessions to second-hand stores and giving them to charity. He doesn't even have a toilet!
