John Travolta Replaced Henry Winkler in ‘Grease’
Even those who have never seen the film ‘Grease,’ know that John Travolta played the slick haired, leather jacket wearing Danny Zuko alongside actress Olivia Newton-John. But the director wanted the role to go to Henry Winkler since he had played a somewhat similar character in the sitcom “Happy Days.” But the director discovered that Winkler didn’t have a great singing voice, which was required for the role. So, the actor was replaced by Travolta.