1. As grittier as it can be
Did you know that Jim Jacobs and Warren Casey were inspired by a Chicago high school in 1971 for the original production? However they avoided swearwords and thus the musical got its name from the extreme trend for greasy food, engines and of course greasy hair.
2.The movie had a playboy producer
As reported in Vanity Fair, although producer Carr thought this Tony-nominated play would do a perfect film he was dismissed by his Paramount boss ending up only with a budget of $6 million to make it.
3.Danny Zuko was almost going to be played by “The Fonz”
Henry Winkler the then star of The Happy Days was offered the leading role but he refused it as he was concerned not to be a typecast.
4.Sandy was almost played by Carrie Fisher
The director Randal Kleiser allegedly watched dailies of Star Wars to see if Carrie was the perfect choice.