Mark Hamill is reflecting on how Michael Keaton tore down typecasting for the “Batman” superhero films. Hamill, who voiced The Joker in the critically acclaimed TV show “Batman: The Animated Series,” reflected on Keaton’s casting in Tim Burton’s live-action 1989 “Batman” movie during a Wired video interview (below). “I had a confidence that really helped me, because there was this big outcry that Michael Keaton was going to play Batman,” Hamill recalled of auditioning for the voice-acting role.