Although kicking around since 1975 (in movies such as Boy In The Plastic Bubble and Carrie), it was his super-slick performance as the cocky Tony Manero in the 1977 smash Saturday Night Fever that launched Travolta. The film that perfectly encapsulated the disco era, grossed almost £150 million worldwide, and made Travolta the hippest actor around. But it was his next film that propelled him into orbit. Although Grease cost a mere $6 million, it has made well over $300 million to date. And it did it with a genre movie companies were loathe to take on: the musical. Riding high, it seemed as if anything Travolta touched was a guaranteed hit. But nothing he did after Grease quite matched the superstardom he was expected to achieve. There was the odd decent film, such as Blow Out in 1981, but Travolta began to sink without trace. Even the sequel to Saturday Night Fever, Staying Alive, flopped. The only sign of life was in 1989 with the surprise hit Look Who's Talking.