'The Big Lebowski' and 'Roseanne' star John Goodman has been speaking about his weight loss on American television.

In an interview on 'Late Night with David Letterman', Goodman revealed that at his heaviest he was close to 400lbs, over 28 stone.

Watch the interview here.

The actor, who currently stars in the new series from the creators of 'The Wire', 'Treme', said his weight loss would be "an ongoing process for the rest of my life".

Goodman said he planned to be realistic with his goals.

"I'm not going to look like Paris Hilton or anything like that," he joked.