While "visiting" 1960, Peggy Sue warns her sister about eating red M&Ms. Red M&Ms were discontinued in 1976, when Red #2 dye was named as a suspected carcinogen. In 1986--after the film was released--red M&Ms were reintroduced with a different red dye.

In the original script, Rosalie, the woman in the wheelchair at Peggy Sue's high school reunion, was a gymnast who was crippled in an accident. In the original script, Peggy Sue tried to take advantage of her knowledge of the future. She invented pantyhose, encouraged people to invest in Xerox, and tried to prevent Rosalie from hurting herself.

The blue 1958 Chevrolet Impala convertible that Nicolas Cage drives was later given away in a sweepstakes tied in with the opening of the film.

Sofia Coppola (director Francis Ford Coppola's daughter) plays Peggy Sue's little sister. Sofia would later direct Kathleen Turner in The Virgin Suicides (1999).

Debra Winger was offered the role of Peggy Sue and was actually cast but a back injury from a bicycle accident forced her to withdraw from the film.

Kathleen Turner usually feels the role she's playing intensely. In this movie she had terrible nightmares about her dead grandmother calling her on the phone, similar to what Peggy Sue feels in the phone scene.

The opening shot of the film is an optical illusion. Because the camera and crew would have been seen in the reflection of the mirror had the scene been shot in a conventional manner, there is a body double for Kathleen Turner (only she can be seen from behind in the shot) on the other side of the "mirror", doing the exact opposite of the star's movements, giving the illusion that Turner and Helen Hunt are reflections, when in fact they are the real actors in tableau with a body double sitting in front of them with her back to the camera in front of an empty mirror frame, framing a hole in the wall of the set.

When Debra Winger was attached to star, she asked Penny Marshall to direct the film. Marshall met with Tom Hanks and Sean Penn for the male lead, but was fired three weeks into pre-production by the producers, who felt that the film had gotten too big for a first-time director.

Steve Guttenberg was considered for the role of Charlie. In his biography, "The Guttenberg Bible", Steve recounts that he spent most of his audition time questioning Francis Ford Coppola about the making of The Godfather (1972).

Sofia Coppola and Nicolas Cage are cousins in real life.

Nicolas Cage based his character's voice on Pokey of The Gumby Show (1956). Francis Ford Coppola and the producers hated the voice and Cage was nearly fired. But Cage managed to convince Coppola he was making a good choice.

Final film of John Carradine (scenes he shot for an unproduced film were later inserted into Evil Spawn (1987), made after this film was completed).

When Peggy Sue's friends take her home after she faints at the blood drive, the car radio plays "Tequila". The radio station is KFRC San Francisco, which altered its live programming for the movie.

In 2008, Nicholas Cage settled a libel suit against Kathleen Turner for falsely claiming in her memoir, "send yourself roses", that he was arrested twice and had stolen a dog.

This was Leon Ames's final film before his death on October 12, 1993 at the age of 91.

The poem quoted by Michael Fitzsimmons on the hill is 'When You Are Old' by William Butler Yeats (1865-1939).

Dennis Quaid turned down the role of Charlie Bodell in order to appear in The Big Easy (1986).

At the high school reunion, when Peggy Sue is named queen, Marshall Crenshaw sings Buddy Holly's "Peggy Sue". Crenshaw went on to play Buddy Holly in La Bamba (1987).

Helen Hunt, who plays Peggy Sue and Charlie's daughter, is nine years younger than her mother (Kathleen Turner) and a year older than her father (Nicolas Cage).

In a 2018 interview with David Marchese on the website Vulture, Kathleen Turner said that she was taken aback on the set of Peggy Sue Got Married when she first heard the voice that Nicholas Cage chose to use while playing her love interest, but she didn't think it was her job to direct another actor's performance. She instead talked to the movie's director, Francis Ford Coppola and asked if he had approved Cage's choice. When Coppola failed to intervene, Turner said that she made it work by choosing to interact with Cage's character in a way that explained her character's eventual disillusionment with the past.

Throughout the film, the phrase "Why, I oughta . . . " always brings immediate laughter from everyone. It was originally a catchphrase of Moe Howard's character from his shorts with The Three Stooges.

The film made Siskel & Ebert 1986 Top Ten list. Gene Siskel placing the film at number 5 and Roger Ebert at number 9.

Features Kathleen Turner's only Oscar nominated performance.

In the opening title sequence, the backgrounds start off very brightly colored (hot pink, electric blue, etc.) but abruptly change to all gray about halfway through. This is later mirrored when Peggy Sue is in 1960 - most of the clothes that the high schoolers wear are gray or white, or off-white, pastel yellow, and other pale neutrals and pastels, with a few exceptions.

The quote "The young man leaned back in his chair. No bulls would die today ..." is from "The Sun Also Rises" by Ernest Hemingway.

In addition to the opening shot being a false mirror shot, there are several other scenes that use the same technique, including the closing shot.

In this movie, Don Murray plays Helen Hunt's grandfather. In Quarterback Princess (1983), he portrays her father.

When Peggy Sue leaves the school's nurse's office and is walking down the hallway with Maddie and Carol, she sees a mylar balloon floating near the ceiling. The balloon was one of the decorations at the 25th-year class reunion that Peggy was attending when she suddenly fainted.

Part of Nicolas Cage's technique for Charlie's unusual voice not only involved basing it on the animated character Pokey, but also wearing a set of dentures giving himself a prominent overbite.

The film takes place in 1985 and 1960.

Michael Fitzsimmons (Kevin J. O'Connor) refers several times to Hemingway being a terrible writer. O'Connor would play Hemingway two years later, in The Moderns (1988).

Charlie (Nicolas Cage) begs Peggy to marry him, saying he doesn't know what the future might bring; he might lose his arm, even. In Cage's next film, Moonstruck (1987), he played a baker who has lost his hand.

There are Buddy Holly song titles as a part of several characters' dialog throughout the movie. One example is when Nicolas Cage says, "Oh boy".

Included among the American Film Institute's 2000 list of the 500 movies nominated for the Top 100 Funniest American Movies.

Peggy Sue seeing the Mylar balloon is cited as evidence that the trip back in time didn't really happen. But the fact that Charlie shows her the dedication of Michael's book "to a starry night" (an encounter which obviously didn't happen in the original timeline) upon her return is strong evidence that she really did go back.

This is one of two 1986 time travel films in which Catherine Hicks (Carol Heath) plays a supporting role. The other is Star Trek IV: The Voyage Home (1986).

Ginger Taylor plays Janet (Charlie's lover in the 1980s), but her scenes were deleted. However, she is listed in ending credits.

Nicolas Cage and Joan Allen would star together eleven years later in Face/Off (1997).

Nicolas Cage's character conveys that his partner thought the big bopper "was a hamburger". In reality, the big bopper toured with Buddy Holly who sang "Peggy Sue Got Married"

Kathleen Turner and Jim Carrey appeared in Dumb and Dumber To (2014).

Second of two films scored by John Barry in which the main character travels back in time within their own subconscious. In Somewhere in Time (1980), Richard Collier accomplishes it through meditation while Peggy Sue experiences it during the aftermath of a heart attack.

It is never made clear whether Peggy Sue actually traveled back in time or was dreaming. Some hints may be found in the music - at the teenagers' party, the song "Just A Dream" (Jimmy Clanton, 1958) can be heard, and late in the movie during the lodge scene, the song "Beautiful Dreamer" by Stephen Foster plays. Also, when Peggy Sue goes into the hallway at school after waking up in the blood drive, she sees a Mylar balloon floating away. Mylar or foil balloons were not developed until the late 1970s.