Ozzy Osbourne was notorious for partying hard in his youth, but the rocker got sober before his death - and occasionally crossed paths with other sober celebrities. In the posthumous memoir, Last Rites, Osbourne revealed that he crossed paths with Matthew Perry while the latter was in AA. "He used to come to our house for AA meetings, or so my wife tells me," Osbourne wrote in the book, which hit shelves Tuesday, October 7. "The funniest, most talented bloke. And he was trying so hard to stay on the right path.