Rock matriarch Sharon Osbourne is finding it difficult to work with David Hasselhoff on U.S. TV talent search AMERICA'S GOT TALENT - because he sings opera constantly. The pair are judges on the show and Osbourne can't stand the fact she has a dressing room next to the Baywatch star. She says, "He's an amazingly crazy individual. He's very complex. "We get along really well, but his dressing room is right next to mine and he sings opera all the time. It's a pain when he sings all the time. "I'm like, 'David, stop it!'"