The Fonz was the breakout character on the sitcom Happy Days, and his leather jacket became a symbol of coolness itself. But why? And how did Henry Winkler turn The Fonz into an American icon? (Celeb interview: Henry Winkler) This episode is sponsored by The Great Courses (www.thegreatcoursesplus.com/LOST) and Vistaprint (www.vistaprint.com code: LOST).