* Grease was released in the United States on June 16, 1978.
Who are the main actors in Grease?:
* John Travolta as Danny Zuko
* Olivia Newton-John as Sandy Olsson
* Stockard Channing as Rizzo
* Jeff Conaway as Kenickie
* Barry Pearl as Doody
* Michael Tucci as Sonny
* Kelly Ward as Putzie
* Didi Conn as Frenchy
* Jamie Donnelly as Jan
* Dinah Manoff as Marty