The success of any tightly scripted, live event is certainly measured in ratings, ticket sales, buzz, and -- with regard to quadrennial political nominating conventions -- voting returns. But the real yardstick for any major pop-culture event comes down to one simple element: The surprise celebrity cameo. Recent examples include James Bond and Queen Elizabeth skydiving into the London Olympics Opening Ceremonies; Tupac Shakur's hologram at Coachella; and when Jon Hamm popped up to say goodbye to...
CNN Showbiz — The success of any tightly scripted, live event is certainly measured in ratings, ticket sales, buzz, and -- with regard to quadrennial political nominating conventions -... more info