Jerry Springer has insisted there were no surprising subjects on his chat show, as he celebrated 20 seasons of the programme.

Jerry, who marked the feat by filming an episode in New York's Times Square, first hosted the show in September 1991.

When the show's rights were first bought out, "they said from now on we're only allowed to do crazy," Jerry said.

"The culture of television changed," he said. "The world didn't change. There's nothing that's ever been on any of our shows that a grown-up didn't know existed. There's nothing shocking in the show. What was shocking was that we had never seen it on television before."

Offstage, it seems Jerry takes the show less seriously than he does on the air.

"I'm hired to do a show about crazy, so I can't then say, 'I don't want to do crazy,'" he deadpanned. "I know if I go to work I see crazy. If I go home, hopefully I don't see crazy."