Alex Winter claimed that he gets two different letters from teachers - positive ones from history teachers for encouraging children to learn about history and the figures, and negative ones from English teachers for affecting the way students speak.
In the original script, the time machine was a 1969 Chevy van, but the filmmakers thought that it would be a rip-off of Back to the Future (1985). So, they changed it to a phone booth (apparently unconcerned that Doctor Who (1963) uses a police telephone box as its time machine). Also, when they used the van, Bill and Ted picked up more historical figures than they did in the final film.
When Napoleon finishes his "waterslide" presentation at the end of the movie, Ted looks up and says, "I don't think it's gonna work." If you look closely at the maps, you can see that Napoleon is actually diagramming the French invasion of Russia, Napoléon Bonaparte's most disastrous defeat.
Bill and Ted began as a stand-up act, in which the characters would discuss current events without knowing what they were talking about. Originally, there was a third character named Bob, but the comedian who played him lost interest after a few performances.
Originally the plot was to have Bill and Ted visit, and therefore accidentally cause, all of history's greatest tragedies (the sinking of the Titanic, the crash of the Hindenburg, the Black Plague...).
In April 2013, Alex Winter commented on George Carlin's casting: "He was a very happy accident. They were going after serious people first. Like Sir Sean Connery, and someone had the idea, way after we started shooting, of George. That whole movie was a happy accident. No one thought it would ever see the light of day."
Principal photography was completed in 1987, but the release was delayed because the film's original financiers, De Laurentiis Entertainment Group, went bankrupt. The film was in danger of being dumped onto cable television, until Nelson Entertainment bought the rights to the movie in 1988, and it was released in 1989.
The mall scene was filmed at Metrocenter Mall in Phoenix, Arizona in 1987. Some of the extras in the scene were kids from a local high school, Cortez, while they were there on their lunch break. Cortez High School is Alice Cooper's alma mater.
Ed Solomon and Chris Matheson wrote the script over the course of just four days. They wrote it by hand, on note paper, during a series of meetings at a couple of local coffee shops. The 2005 box set, Bill & Ted's Most Excellent Collection, features some of their handwritten notes.
The German dub has gained cult-status in Germany, and is credited for coining the words "Hoschi" and "granatenstark", which served as substitutes for "dude" and "excellent" respectively. Also, the quote "Be excellent to each other" has been replaced with a more philosophical line, which translates into "Colorful and excellent is the being."
The film takes place in 2688, May 1988, 1805, 1879, 410 B.C., the fifteenth century, 1901, 1810, 1429, 1209, 1863, and 1,000,000 B.C. In the movie, it is stated that they picked up Genghis Khan in 1269, but as Genghis Khan died in 1227 it is likely the writers meant 1209. When Bill and Ted travel through time and get Genghis Khan, the location and year that they collect him clearly says Outer Mongolia, 1209.
The "Ziggy Pig" dish in the ice-cream restaurant is a reference to a comic book character put out by Timely Comics (later Marvel) during World War II. By the time this movie was made, it and its image (which appears on the badge they place on Napoleon's chest) were public domain. The award itself is based on the ribbon that could be won at Farrell's Ice Cream Parlor restaurants upon completion of their "Pig Trough," a double-sized banana split. Farrell's was a large restaurant chain in the 1970s, but few remained by 1988.
Napoleon "pigs out" on a Neapolitan sundae at Ziggy Piggy's that he refers to as "La glacé". Even though there are similarities between the ice cream and his name, the dessert originated from Naples, Italy. Historically, Napoléon Bonaparte did in fact have a fondness for it, when he arrived in that country.
In the book "The Producers: Profiles in Frustration," Producer Scott Kroopf recalled pitching the idea of "Bill & Ted" to Dino De Laurentiis. Quoted Kroopf: "Dino had no idea what the film was about. He didn't understand what dudes were until someone said to him that 'dudes' meant guys who had big dicks. Then he said 'Oh, great, now I get it.'"
In the original outline for the movie, Rufus was a 28-year-old high school sophomore who befriended Bill and Ted. There was also a character named John the Serf, whom Bill and Ted picked up in medieval England.
In a 1991 interview, Ed Solomon said the characters of Bill and Ted were originally envisaged as "fourteen-year-old skinny guys, with low-rider bell-bottoms, and heavy metal t-shirts" who were despised by the popular kids at school. Casting Keanu Reeves and Alex Winter changed the filmmakers' images of the characters because "once you cast Alex and Keanu, who look like pretty cool guys, that was hard to believe."
Most of the historical figures Bill and Ted brought back with them all died horrifically. Several characters, including Socrates, Joan of Arc, Billy the Kid, and Abraham Lincoln, were either executed or assassinated. Sigmund Freud died by assisted suicide, and Napoléon Bonaparte's death in house arrest has sometimes been believed to be the result of arsenic poisoning. Genghis Khan and Ludwig van Beethoven, however, are generally held to have died completely natural deaths.
Bill says, "Let's reach out and touch someone" before they use the booth for the first time, an old slogan for Bell System Phone Company. It was associated with their advertising campaign that introduced "touchtone" push button telephones in the 1960s. It resulted in massive sales of the new technology, which coincided with a major upgrade to telephone systems throughout the U.S. and eventually the world.
Coronado High School's auditorium was torn down during 2005-7 renovations, but its unique roof and intricate exterior mosaic, seen in an opening scene when Bill and Ted leave school in a red Mustang, was saved and moved, piece by piece, to the new auditorium.
Chris Matheson didn't intend for this to be a science-fiction movie. "I try to consciously fight it, out of a desire to break away, but maybe I have a predilection toward that because of my dad," Matheson told Starlog Magazine of the inevitable fantasy elements that emerged. "He's a great writer and craftsman, and always has suggestions." In fact, it was his father Richard Matheson's idea that the time travel story be its own movie. "We were going to write a sketch film, with this as one of the skits, but my dad said, 'That sounds like a whole movie,'" Matheson recalled, "And he was right!"
Bill's "philosophy" to Socrates, "All we are is dust in the wind, dude", is a line from "Dust in the Wind" by Kansas. Socrates' response is, "Like sands of the hourglass, such are the days of our lives." For decades, this was the classic voiceover for the soap opera, Days of Our Lives (1965).
The picture on Ted's T-shirt is the cover photo for Van Halen's "Why Can't This Be Love?" single, for sale during the Van Halen 5150 tour, and very commonly seen on Van Halen fans in the late 1980s. This was Sammy Hagar's first tour with Van Halen after replacing David Lee Roth.
During filming, Dan Shor (Billy the Kid) and Jane Wiedlin (Joan of Arc) were 31 and 29 years old, respectively. The real Billy the Kid and Joan of Arc were 21 and 19, respectively, when they were killed.
The exterior shots of Bill and Ted's high school are of Coronado High School in Scottsdale, AZ. The striking mosaic is featured on the school's auditorium façade, and was designed by art teacher Mr. Gatti and the students in the early 1960s.
The Circle K is in San Dimas, CA, at the corner of Walnut and Bonita Avenues. The scenes at the convenience store, were at least partially filmed at the Circle K at the northwest corner of Southern and Hardy in Tempe, AZ.
The piece of music "Two Heads are Better Than One" is credited to Power Tool. This song is, in fact, the work of Matthew and Gunnar Nelson, the sons of legendary rock and roll icon Ricky Nelson, who would go on to success in their own band, Nelson. Ironically, the film was released by a company called Nelson Entertainment.
The bar fight scene is parallel to the girl scout fight scene in Airplane! (1980). Both begin over a poker cheat (extra ace), have the same punches and bar stool hit, and end with one being slid across the bar until breaking through a wall or juke box.
Australian band "Space Desert" has an EP called "Forrest Gump II", but none of the songs are about Forrest Gump (1994). It is in fact about Bill and Ted, and even quote lines from the film, and include a snippet of an interview with Keanu Reeves and Alex Winter explaining the meaning of the word "Bodacious".
The film was originally going to end with Bill and Ted taking the princesses to the prom. When they first meet, Ted asks them to the prom. A photo on a British VHS cover from 1997 suggests this scene was filmed but deleted.
One of the few profanity words spoken in the movie are by Ted's younger brother Deacon. When confronted about ditching Napoleon, Deacon states, "He was a dick!" also, when throwing a gutterball while bowling, napolean shouts "merde,merde,merde",,!, which, translated means "shit,shit,shit,,,!
The trivia items below may give away important plot points.
When Bill and Ted are leaving Napoleon in Ted's younger brother Deacon's care, you can see an electric football game in the background. Assuming Ted grew up playing the game, it helps explain why Bill and Ted are good at it, and can best the Grim Reaper when they play in Bill & Ted's Bogus Journey (1991).
On the cover of the British VHS re-release of the film (by BMG Entertainment International U.K. and Ireland Ltd. by Canal+ distribution) in 1997, there is a picture of Bill and Ted wearing tuxedos, linking arms with the Princess Babes. This seems to be from a deleted high school prom scene, which would have appeared at the end of the film.
The rescue scene of Bill and Ted (their comrades pretending to be executioners and escaping on a horse-drawn carriage) is the same way that D'Artagnan is rescued in The Three Musketeers (1993), which was also directed by Stephen Herek.
In Germany, one piece of dialog has been altered in the scene when Bill and Ted meet their future selves. They are asking "If you guys are really us, of which famous toothpick (celebrity) are we thinking right now?", to which their future selves reply "Arnold Schwarzenegger!".