David Hasselhoff indulged in a public hissy fit over the state of his (lack of) career, according to reports.

The 55-year-old star - a judge on US TV show America's Got Talent - was seen berating his agent in a foul-mouthed rant over lunch in the Beverley Hills Hotel's Polo Lounge restaurant on Friday afternoon (November 16), before stunning onlookers by storming out.

One fellow diner told the New York Post newspaper: "It was amazing. Everyone could hear that he was in a bad mood and complaining bitterly about the sort of jobs he has been offered lately.

"The fact that he was having a huge tantrum was bad enough, but when he just got up and stormed out everyone was sitting there open-mouthed."

Hasselhoff's publicist Judy Katz confirmed the former 'Baywatch' star had lunch in the Polo Lounge with his agent, but firmly denied an argument took place.