From heart surgery to "Homeland" with Mandy Patinkin

"So that's acting," Mandy Patinkin tells Bob Simon about his portrayal of CIA spy chief Saul Berenson in the Showtime series "Homeland."

While Berenson is quiet and composed, Patinkin says he isn't -- but aspires to be. "I love playing someone calm," Patinkin tells Simon. "There's a lot of Saul I like to take with me in my life."

In these 60 Minutes Overtime extras, Patinkin talks more about that division between the actor and his characters -- from the swashbuckling sword-fighter Inigo Montoya in the movie "The Princess Bride" to surgeon Dr. Jeffrey Geiger on the CBS series "Chicago Hope."

"I'm a volcano inside, and I don't look at that as a great thing," actor Mandy Patinkin tells Bob Simon.

"You're an idiot if you don't know that it's going to be over in a few minutes," actor Mandy Patinkin says about his new-found fame.

Before his swashbuckling character Inigo Montoya could say, "Prepare to die," Mandy Patinkin had to learn to fence.

To prepare for his role as a surgeon on the television show "Chicago Hope," actor Mandy Patinkin says he "scrubbed in" on 17 open heart surgeries.

A leading role in "Homeland" has changed Mandy Patinkin's professional life, but before that, cancer altered his real world.

"I can play a good listener, but in terms of Mandy, Mandy works at being a good listener," says "Homeland" actor Mandy Patinkin.