Did you know that Surrealist artist Salvador Dalí designed the elaborate dream sequence in the movie Spellbound? Celebrate national Alfred Hitchcock Day with a look at five of the director’s classic films in our collection. 

[Spellbound. 1945. Directed by Alfred Hitchcock. 111 min. The Museum of Modern Art, New York]

Thanks to all the Star Wars parodies, references, and freaking prequels, kids today probably learn that Darth Vader is Luke Skywalker’s father before they find out who the president is. However, when The Empire Strikes Back came out in 1980 and Vader said the classic, often misremembered words, “I am your father,” audiences were left in complete shock. Keep in mind that fans had been told in the first movie that Luke’s dad was dead, by a man with a British accent, no less, so they had little reason to doubt that it wasn’t true.

Still, dozens of people are present during the shooting of any scene in a movie, so how the hell did George Lucas convince them to keep this a secret until the movie came out?

Lucas didn’t need to convince anyone, because the actor playing Darth Vader in that scene didn’t say “I am your father” on the set – he said “Obi-Wan killed your father.”

As you may know, the guy in Vader’s suit and the guy who did the voice are two different people (James Earl Jones would dub over David Prowse’s lines later), so it was extremely easy for Lucas to just write the fake line into the script and shoot the scene like that. In fact, Lucas was so distrustful of his own crew that he told the truth to absolutely no one.

5 Awesome Ways Famous Plot Twists Were Kept Secret