Chuck Lorre Memoir Reveals 'Big Bang Theory' Stars' Pay Cut Outrage

• Chuck Lorre's memoir 'Sitcom' discusses the cast's reaction to a pay cut request for new co-stars.
• The memoir reveals Charlie Sheen's final chaotic day on set.
• CBS initially rejected Melissa McCarthy for a role in the show, according to Lorre.
• Lorre reflects on his career and lessons learned in his memoir.