6 In the Fight Club DVD, there is a hidden Easter egg message. It appears after the FBI Warning and the Attention message. You’d have to pause to be able to read it all.

The warning message seen at the beginning of the film isn’t exactly what one would expect. It’s not even some gibberish either. Its content asks you if you have nothing better to do with your life than to read some warning and goes on to question your trust and respect in those who claim authority. Then, it suggests that you should go out and meet people. It also warns you that “if you don’t claim your humanity you will become a statistic”. The whole warning, though it’s not exactly polite, does talk about the bad side of current lifestyles.(source)

7 These spots on the map in Iron Man 2 represent the locations of different superheroes in Marvel Universe.

According to the speculations of Reddit users, the location near Greenland probably refers to Captain America; the location near mainland Europe refers to the location of the Tesseract; the element used to make Captain America’s shield was found in Wakanda, Africa; the island between Africa and South America could possibly be the location of Shield Airship; the location in California could refer to Iron Man’s location; New Mexico is the location of Thor’s hammer; and lastly New York is Hulk’s location.(source)

8 George Lucas used many references to Star Wars characters in his other films. R2-D2 and C3PO are seen in Raiders of the Lost Ark (1981) among the hieroglyphics behind Harrison Ford in one of the scenes. Also, there is a Club Obi Wan Bar in Indiana Jones and the Temple of Doom (1984).

The Club Obi Wan in Indiana Jones was owned by a crime lord Lao Che, and in the movie, he attempts to double-cross Jones by using poison. The club’s name is a reference to the Star Wars character Obi-Wan Kenobi. Another Star Wars reference was made in Indiana Jones’ Greatest Adventures in the form of C’boath Bar, which was the name of a character from Star Wars Expanded Universe, Joruus C’boath. Moreover, equally interesting are the hieroglyphics of R2-D2 and C3PO in Raiders of the Lost Ark.(1, 2)

9 During the scene in which Queen Amidala speaks in the Grand Convocation Chamber in Star Wars: Episode 1 – The Phantom Menace (1999), the aliens from Steven Spielberg’s movie E.T. the Extra-Terrestrial (1982) can be seen. Spielberg, a friend and colleague of George Lucas, suggested their inclusion in the film.

Furthermore, the Easter egg was expanded by James Luceno, who wrote Cloak of Deception, a Star Wars novel that takes place less than a year before the events of Episode I – The Phantom Menace. Luceno gave the name “Grebleips”, which is “Spielberg” spelled backwards, to a character in the movie. Another Easter egg was one of the characters in Spielberg’s E.T. dressing up as Yoda.(source)

10 The booming trombone theme that serves to increase dread in the movie Inception (2010) was actually the slowed version of the Edith Piaf’s song Non, Je Ne Regrette Rien, which Hans Zimmer made upon the advice of Christopher Nolan.

https://www.youtube.com/watch?v=IFNCnp7325o

The song Non, Je Ne Regrette Rien sung by Edith Piaf was written by Charles Dumont and recorded in 1960. As we all know, the song was used to synchronize the kicks or to time waking up when the characters are in the dream state. Then, there is the booming music that signals something impending, which if sped up would resemble the beginning notes of Piaf’s track. According to Hans Zimmer, that score is subdivisions and multiplications of the tempo of Piaf song though he only used one note from it.(source)