'Grease' Is the Word Quiz

Travolta pushed for Newton-John to take on the role, but she was gun-shy following little film success in the years prior. So, she required a screen test with Travolta beforehand to make sure they had enough chemistry.

That's right, The Fonz himself said "thanks but no thanks" to the part because he didn't want to be perpetually cast as the leather-jacket wearing stud.

Poor Conaway couldn't catch a break where the famed song is concerned. First, he was supposed to be the lead vocalist, but Travolta used his influence to take over the number. Then, during filming his cast members dropped him on top of the car, causing a serious injury, which ultimately led to a pain killer addiction.

Marcia Brady was never a serious contender for the part of virginal Sandy, but Marie Osmond was nearly cast until she expressed displeasure at Sandy's transformation into a "bad girl."

24-year-old John Travolta was practically in diapers compared with Channing, who was 34 when the film was released (33 during production). Donnelly was 31. The director was all too aware that not one member of his cast was young enough for high school, so he conducted "crow's-feet tests" to be sure they could pass for nubile young things.

The scene was coincidentally filmed on August 16, 1977, the same day The King of Rock 'n Roll died.

The actor who played Kenickie started off with a major torch for Olivia, but wound up wedding her sister in 1980. Sadly, the marriage only lasted five years.

The completely bizarre running of plastic wrap was actually a veiled reference to condoms. In all fairness, when singing about the sweet ride Danny does remind us that the chicks'll ... well, you know.

Travolta was intimately familiar with the original musical script, having played Doody in a touring production of "Grease." Ironically, Jeff Conaway had played Danny Zuko on Broadway, but apparently that didn't make him right for the film part.