Many actors go to extraordinary lengths to prepare for a role. They literally throw themselves into the emotional, mental and physical world of the characters they portray in hopes it brings true authenticity to their work. Joaquin Phoenix is just such a performer. In recent years he has offered the movie-going public some of the most memorable performances in the history of cinema and, after winning the Golden Globe for Best Actor in a dramatic role, is favored to win his first Oscar. But owing to his commitment to his craft coupled with the Hollywood publicity machine, it's hard to tell where the actor stops and the man starts.