1. Warner Bros. was initially concerned and hesitant about the casting of Phoebe Cates as Kate, due to her being primarily known for her risqué role in Fast Times at Ridgemont High.
3. Gremlins was originally planned and scheduled for a Christmas-season release, but the film was rushed into production after Warner Bros. learned it would have no major competition for the summer movie season.
4. Originally Gizmo was supposed to be the villain, turning into a Gremlin himself and becoming the leader of the Gremlin pack.
Steven Spielberg overruled this plot element because he felt Gizmo was cute and audiences would want to see him throughout the film.
5. In the original version of the script, the Gremlins kill both the family dog and Billy’s mom by cutting off her head and tossing it down the stairs.
6. Gremlins and Indiana Jones and the Temple of Doom are credited as the films that lead to the creation of the PG-13 rating.
Both movies had scenes of violence that were too much for a PG rating, but not strong enough for an R rating.
7. In the first scene of the movie, Mr. Peltzer walks in front of a broken-down AMC Gremlin.
8. The set for Kingston Falls is the same one used for Hill Valley in Back to the Future.
Both films were shot in the Universal Studios backlot.
9. The movies listed on the marquee: A Boy’s Life (the working title for E.T. the Extra-Terrestrial) and Watch the Skies (the working title for Close Encounters of the Third Kind).
Both movies are Steven Spielberg films.
10. Gizmo never eats in the movie.
11. Mr. Hanson, the science teacher, was originally killed by dozens of hypodermic needles to the face.
The scene was reshot by request from Steven Spielberg; he felt it was just too gruesome. Instead, Mr. Hanson dies from just a single needle in the butt.
12. There is a cameo by Chuck Jones, the legendary animator for Looney Tunes.
13. This was the first film to use the now familiar Amblin Entertainment logo.
15. Stripe is voiced by veteran voice actor Frank Welker, best known as the voice of Fred on Scooby-Doo, Where Are You!
16. If you look closely, you’ll notice that Stripe is the only Gremlin who didn’t sing at the movie theater.
17. While watching Snow White and the Seven Dwarfs, one Gremlin is wearing Mickey Mouse ears.
18. The scene at the end where Stripe hides from Billy in a pile of stuffed animals is a reference to the scene in E.T. (as a gag, an E.T. doll is shown in the shot).
19. Stripe is the only Gremlin in the film to die by sunlight.
Stripe is actually the only Gremlin to die by sunlight in both Gremlins films.
20. The WWII-era Looney Tunes cartoon Falling Hare (where Bugs Bunny is harassed by a gremlin) was supposed to show before the movie.
After viewing an early screening of the film, Warner Bros. executives feared pairing Bugs Bunny with such a dark movie, and they decided against including the cartoon.