From Real Housewives to an Emmy-winning talk show icon, Andy Cohen counts down the top five people he was most scared to have on Watch What Happens Live. Coming in at number 5 is Shaquille O'Neal, next is the late Mama Elsa from The Real Housewives of Miami because she had to be driven up to New York City for the show, in third place is Mariah Carey since she needed to swap chairs so she could show her good side, at number two is Mary Cosby from The Real Housewives of Salt Lake City and the top spot goes to the legendary Oprah Winfrey.