Playboy boss HUGH HEFNER surprised fans of legendary playwright William Shakespeare when he turned up at London's Globe Theatre for a tour of the prestigious establishment. Earlier this week (begs22MAY06), the 80-year-old pornographer showed up unannounced at the venue, which doubles as a Shakespeare museum, with his three girlfriends Holly Madison, Kendra Wilkinson and Bridget Marquardt. And Hefner amazed tour guides with his in-depth knowledge of the HAMLET writer. A Globe spokesman says, "Mr Hefner came on a private visit with several guests. They hadn't told us they were coming, but we agreed to give them a private tour." An onlooker adds, "He brought a photographer and several scantily clad girls, who were wearing stilettos. They were there a good hour and posed for photographs. "A guide told us he seemed to have developed an interest in Renaissance history, and asked a lot of well-informed questions about Shakespeare."