If you’re such a big fan of Grease - the 1978 musical starring John Travolta and Olivia Newton John – that you think you know all the behind-the-scenes trivia, guess again.

Randal Kleiser, Grease's director, breaks down the movie’s beloved "You're the One That I Want" scene and talks about not just the actors and specific shots but goes into detail on lighting, the colour design, performances, choreography, costumes and more.

Grease celebrates its 40th anniversary this year – maybe it’s time for a revisit?