In Back to the Future Part II, that’s not just similar-looking actors playing Marty’s family. Michael J. Fox played old Marty, Marty Jr., and Marlene.

The leg in the poster for The Graduate doesn’t actually belong to Anne Bancroft, who played Mrs. Robinson, but actor/model Linda Gray. She was paid $25.

Thomas Brodie-Sangster may have looked like a little kid in Love Actually, but he was actually 13 when the movie came out.

And Ralph Macchio was 22 when he filmed The Karate Kid.

That isn’t Reese Witherspoon’s hair at the start of Legally Blonde. Witherspoon was busy filming The Importance of Being Earnest, so they used a double.

John Dugan was only 20 when he played Grandpa Sawyer in The Texas Chainsaw Massacre.

That’s not just one kid playing Julian in Big Daddy. Dylan and Cole Sprouse shared the role.

Pocahontas was literally a child when the fully adult John Smith met her and there’s no record of them having a romantic relationship.

According to his partner Jim Hutton, Freddie Mercury actually didn’t know he had AIDS until two years after Live Aid, when in the film Bohemian Rhapsody, Mercury finds out before the concert.

Also, that’s not (just) Rami singing! They mixed his voice with tapes of Freddie Mercury and the similar-sounding Marc Martel.

Similarly, in Selena, they used recordings of Selena’s voice instead of having J.Lo sing.

And in West Side Story, Marni Nixon provided the singing voice for Maria, instead of the actor who actually played Maria, Natalie Wood.

Loren Allred provided the voice for Jenny Lind in The Greatest Showman, not Rebecca Ferguson, who played Jenny.

While Titanic was based on the real tragedy, Jack and Rose were completely made up.

The classic Christmas film It’s a Wonderful Life was filmed in June. It was so hot that the cast and crew had to be given a day off due to heat exhaustion.

Remember that airplane scene in Argo, when they’re chased as they take off? Yeah, that never happened. Everything went smoothly.

Babe was not played by a singular pig in Babe, but rather 46 different pigs.

That’s not Natalie Portman kissing Chris Hemsworth at the end of Thor: The Dark World; it’s actually Hemsworth’s wife, Elsa Pataky.