Breaking Bad - Interview with Bill Burr

You played a tough guy on two episodes of "Breaking Bad."
Yeah, but that's fantasy. It's easy to act tough when you know you're not going to get punched in the face, and have [huge actor] Lavell Crawford as your backup. Lavell's also a comedian — I've known him for years. It was so much fun to be on that show. Just imagine watching a TV show from the pilot on, never missing a season, and then you're in the story line. It's like Poltergeist, being pulled into the TV. I don't know if I'll get to go back. All I know is I got to do it, and it's the coolest thing.

Source: Full interview @ Creative Loafing