Many television and film makers love to put hidden extras, commonly known as Easter Eggs, into their productions.
In case you feel you’ve missed out and not spotted any, here are 17 you can look out for and point out to your friends.
1. C3PO and R2D2 appear Raiders of the Lost Ark
Star Wars droids, C3PO and R2D2, appear in the first Indiana Jones movie, Raiders of the Lost Ark in hieroglyphic form.
2. Star Wars in Star Trek
R2D2 not only appeared in the first Star Trek film, but also makes a blink-and-you’ll-miss-it cameo appearance in the sequel Star Trek: Into Darkness in the scene after the Vengeance fires on the Enterprise.
3. Star Wars reference in Fast and Furious Five
Another hidden Star Wars reference appears in Fast Five where Han’s full name is revealed as Han Seoul-Oh (Han Solo) on his police database entry.
4. Pac-Man in Tron
When Lt. Sark stops to look at the Tron game grid, you can see Pac-Man on the right.
5. 2001 in A Clockwork Orange
Stanley Kubrick added a 2001: A Space Odyssey album to the record store scene.
6. 2001 in Star Wars: The Phantom Menace
George Lucas paid tribute to 2001: A Space Odyssey in his first Star Wars prequel by placing one of the EVA Pods from the film in the junkyard scene.
7. Fingers in The Simpsons
If you look carefully, you will notice that all the characters in The Simpsons have four fingers, apart from God and Jesus who have five.
8. Starbucks in Fight Club
A Starbucks cup appears in every scene of Fight Club.
9. Pineapples in Psych
In the episode “Pilot”, James Roday improvised by picking up a pineapple and saying, “Should I slice this up for the road?” Since then, a pineapple has appeared in every episode as a running gag.
10. The Beatle in Life of Brian
Ex-Beatle George Harrison, the film’s producer, makes a cameo appearance in Monty Python’s Life of Brian.
11. Buzz Lightyear in Finding Nemo
Eagle-eyed viewers will spot Toy Story’s Buzz Lightyear on the dentist’s waiting room floor.
12. Walt’s pants in Breaking Bad
At the beginning of the series, Walt takes his pants off when he and Jesse cook meth for the first time in the desert. Towards the end of the series, he returns to the desert and his pants are still there.
13. A couple’s lifespan in How I Met Your Mother
If you watch very carefully, a couple’s whole life is played out in the background of a scene in How I Met Your Mother, including their meeting, engagement, pregnancy and death.
14. Alien in Predator 2
When Danny Glover discovers the Predator’s trophy room in Predator 2, one of the skulls on display has clearly been taken from Alien’s Xenomorph.
15. Mr Peabody and Sherman in Back to the Future
When Marty crashes into the 1950s, he ploughs into a family farmhouse. The irate farmer refers to his son as Sherman, before the mailbox he shoots reveals his name to be Peabody. Mr Peabody and Sherman are a cartoon double-act with access to a time machine, so this is a knowing salute to a pair of fellow time travellers.
16. Jerry Maguire in King Kong?
As the ship approaches Skull Island, a message is received in morse code, supposedly announcing a warrant for Jack Black’s arrest. However, this isn’t actually what the code translates to – what it actually says is: “Show me the monkey!”
17. Bob Kane signs off Batman
In the 1989 Tim Burton version of Batman, when Alexander Knox walks into his office at the beginning of the movie, a sketch of The Batman is handed to him. The signature at the bottom is that of Bob Kane, the character’s original creator.