The theatrical release version of the film opens with Banzai performing a test-run of his Jet Car, a heavily modified pickup truck powered by a jet engine and capable of exceeding Mach 1. The car is also equipped with a secret device called an oscillation overthruster, which Banzai and his associates hope will allow it to drive through solid matter. The test is a success; Banzai stuns onlookers by driving the Jet Car directly through a mountain. Emerging from the mountain, Banzai finds that an alien, pod-like organism has attached itself to the car during transit.
Hearing of Banzai's success, Italian physicist Dr. Emilio Lizardo (John Lithgow) breaks out of the New Brunswick Home for the Criminally Insane in New Jersey. where he's been imprisoned for 50 years. In a flashback sequence, we learn that Banzai's assistant and mentor, Dr. Hikita (Robert Ito), was present at a failed overthruster experiment of Lizardo's in 1938. Failing to transit through the target wall, Lizardo is briefly trapped in the 8th dimension where his mind is taken over by Lord John Whorfin, hence his current diagnosis of a delusional disorder.
Whorfin is the leader of the Red Lectroids, a race of alien reptiles whom he had led on an expansionist campaign on Planet 10. After being defeated by the peace-loving Black Lectroids, Whorfin and his band of followers were banished into the formless void of the 8th dimension. Lizardo's failed experiment accidentally released Whorfin, where despite being trapped in Lizardo's body, he maintains his leadership of the Red Lectroids. He soon brings over a thousand of them to Earth in an incident that was reported in 1938 by Orson Welles in his radio broadcast The War of the Worlds, only to have it retracted as fiction.
These Red Lectroids now pose as Owners and employees of a defense contracting company named Yoyodyne Propulsion Systems. They have been working on building a large spacecraft under the cover of a US Air Force program, the "truncheon bomber", and intend to rescue the remaining exiles in the 8th dimension, then travel on to Planet 10 and take over. The lack of a working overthruster was a problem until Banzai manages to produce one, and Whorfin hopes to steal it. Banzai's team, the Hong Kong Cavaliers, becomes aware of the Yoyodyne link, and hacks into their computer. They discover that everyone there has the first name John, with various last names such as Yaya, Smallberries, and Bigbooté. At first they think it's a joke, but then they also note that all the Yoyodyne employees applied for Social Security cards on November 1, 1938 (the day after the War of the Worlds broadcast) and all in the same town, Grover's Mill, New Jersey (the town where the spaceship in the War of the Worlds broadcast landed). They deduce the connection between Lizardo, Yoyodyne and the Lectroids, and inform Banzai.
In the meantime, a Black Lectroid spacecraft orbiting Earth contacts Banzai, giving him a cryptic nonverbal message that enables him to see through Lectroids' natural pheromonic camouflage. (To unassisted humans, Black Lectroids appear to be Rastafarian Jamaicans, while Red Lectroids appear as caucasians.) The ship also sends a "thermo-pod" to Earth, with a messenger who brings Banzai a holographic message from the Black Lectroids' leader, explaining Lord Whorfin's history and motives, and giving an ultimatum: stop Whorfin and his Red Lectroid army, or the Black Lectroids will protect themselves by staging a fake nuclear attack and letting the U.S. and USSR destroy the world in a burst of Cold War paranoia.
With help from the Black Lectroid messenger John Parker, and Banzai's usual posse of helpers ("those hard-rockin' scientists, the Hong Kong Cavaliers"), Buckaroo succeeds in his mission, destroying the Red Lectroids and saving Earth. During the end credits, there is a screen title proclaiming the upcoming sequel Buckaroo Banzai Against the World Crime League (see below).
The Hong Kong Cavaliers are the assistants of Banzai in the movie, and are similar to Doc Savage's Fabulous Five. They reside at the Banzai Institute, a think-tank located in Holland Township, New Jersey. They are scientific experts in a variety of fields, and also are his rock and roll band. They are referred to by code names or nicknames and, except for New Jersey, their real names are unknown.
In addition to the Hong Kong Cavaliers, Buckaroo Banzai is assisted by a network of supporters and fans. The Radar Rangers are an amateur radar enthusiast group that helps Buckaroo track major threats. The Blue Blazer Irregulars are people of all ages and from all walks of life and help in various ways. Their organization includes assault teams in its structure. The Rug Suckers are a team of armed civilians who operate a rug cleaning company, but are available to help Banzai when called on.
Mac Rauch's original 30-page treatment was entitled, Find the Jetcar, Said the President - A Buckaroo Banzai Thriller. Early on, one of the revisions Mac Rauch made was changing Buckaroo's surname from Bandy to Banzai but he wasn't crazy about it. However, Richter convinced him to keep the name. The Hong Kong Cavaliers also appeared in these early drafts, but, according to Richter, "it never really went to a completed script. Mac wrote and wrote but never wrote the end." Another early draft was entitled, The Strange Case of Mr. Cigars, about a huge robot and a box of Hitler's cigars. Mac Rauch shelved his work for a few years while he wrote New York, New York for Martin Scorsese and other un-produced screenplays.
In 1980, Richter talked with producers Frank Marshall and Neil Canton about filming one of his screenplays. Out of this meeting, Canton and Richter formed their own production company and decided that Buckaroo Banzai would be the first film. Under their supervision, Mac Rauch wrote a 60-page treatment entitled, Lepers from Saturn. They shopped Mac Rauch's treatment around to production executives who were their peers but no one wanted to take on such unusual subject matter by two first-time producers and a first-time director. Canton and Richter contacted veteran producer Sidney Beckerman at MGM/United Artists who Canton had worked with before. Beckerman liked it and introduced Richter and Canton to studio chief David Begelmen. Within 24 hours they had a development deal with the studio. It took Mac Rauch a year and a half to write the final screenplay and during this time, the Lepers from the treatment became Lizards and then Lectroids from Planet 10.
However, a Writers Guild of America strike forced the project to languish in development for more than a year. Begelmen left MGM because several of his projects had performed poorly at the box office. This put all of his future projects, Buckaroo Banzai included, in jeopardy. Begelmen formed Sherwood Productions and exercised a buy-out option with MGM for the Banzai script. He took it to 20th Century Fox who agreed to make it. Mac Rauch ended up writing three more drafts before they had a shooting script.
For the role of Dr. Emilio Lizardo, the studio wanted to cast an unknown actor but Mac Rauch had written the role with John Lithgow in mind. Like Weller, he was not sure about the character but Richter convinced him by "claiming what a real feast for an actor this wonderful Jekyll and Hyde character was", the actor said. For Lizardo's accent, Lithgow spent time with an Italian tailor at MGM and recorded his voice. He changed his walk to that of an "old crab, and because my alien metabolism is supposed to be messed up". Lithgow said of his character, "playing Lizardo felt like playing the madman in The Cabinet of Dr. Caligari".
Ellen Barkin describes the film as "if Terry Southern had written Star Wars. None of the characters are quite what they should be - just my kind of thing." Richter's only choice to play John Bigboote was Christopher Lloyd. Richter first met Jeff Goldblum on Invasion of the Body Snatchers and wanted him to play New Jersey. The actor admired his writing and was eager to work with the cast the director had assembled. Lewis Smith was asked to dye his hair blond and it took eight hours and he saw it go from red to orange to fluorescent yellow to white.
Clancy Brown said that his character is \"very common sensical. He's the everyman of the film\". Robert Ito was so determined to get the role of Dr. Hikita, that he disguised himself as an old man, designing his own makeup job to age himself 30 years.
The Banzai Institute exteriors were shot in Rustic Canyon with the interiors filmed in an Art Deco house designed in 1931 by MGM art director Cedric Gibbons for his wife, Dolores del Rio. Deserted rooms at Brentwood's V.A. hospital were used for Dr. Lizardo's room at the New Brunswick Home for the Criminally Insane. Lizardo's 1938 laboratory was filmed at a deserted industrial site, Alpha Tubing. The set decorators rented a collection of 1930s electrical props originally used in the original Boris Karloff Frankenstein films. The interiors of Yoyodyne Propulsion Systems were shot in the abandoned Firestone Tire Factory. The production rented warhead nosecones from Modern Props and had televisions going all the time on the set. Wilmington's Department of Water and Power provided the location for Dr. Lizardo's shock tower and served as the Yoyodyne exterior. Weller remembers that during the scene where his character is tortured by Dr. Lizardo, \"I never laughed so hard in my life! They had to stop takes over and over on that segment because I was laughing at the banter between [Christopher] Lloyd and [John] Lithgow.\" The Armco Steel Plant in Torrance housed the Lectroid launch hanger. Finally, 12-weeks of filming were done on the backlot and soundstages at MGM.
Richter and Riva did not want metal spaceships and opted for a more organic look like a deep sea oyster shell. Gregory Jein, Inc. and Stetson Visual Concepts built the spaceship models and worked off sketches by production illustrator Tom Cranham and used seashells as guides.
Buckaroo Banzai was originally scheduled to be released on June 8, 1984 but was pushed back to August 15. It opened on 236 screens and faced stiff competition against the likes of Star Trek III: The Search for Spock, Indiana Jones and the Temple of Doom and Ghostbusters. It made USD $620,279 on its opening weekend before finally grossing $6.2 million in North America.
The film was not well-received critically and currently has a 68% rating on Rotten Tomatoes (vs. 50% by its Top Critics) as well as a 5.9/10 rating on the Internet Movie Database. Dave Kehr, in the Chicago Reader, wrote, "Richter seems to have invented an elaborate mythology for his hero . . . but he never bothers to explicate it; the film gives you the mildly annoying sensation of being left out of a not very good private joke". In his review for the New York Times, Vincent Canby wrote that Buckaroo Banzai "may well turn out to be a pilot film for other theatrical features, though this one would be hard to top for pure, nutty fun". Richard Corliss, in his review for Time, wrote, "its creators, Earl Mac Rauch and W.D. Richter, propel their film with such pace and farfetched style that anyone without Ph.D.s in astrophysics and pop culture is likely to get lost in the ganglion of story strands. One wonders if the movie is too ambitious, facetious and hip for its own box-office good".
Buckaroo Banzai has since attracted a loyal cult following and was quite popular on home video. Richter said, "It has had the most dramatic reactions of anything I've worked on. Some loathe it and others are willing to die for it". The director feels that the film failed commercially because the narrative was too complex, he would have liked to have had more coverage for certain scenes, he could have edited the film better and there were too many master shots and two-shots that left little for the editor to work with. Entertainment Weekly ranked Buckaroo Banzai as #43 in their Top 50 Cult Movies. The film was also ranked #21 on the magazine's "The Cult 25: The Essential Left-Field Movie Hits Since '83" list.
The DVD of the film restores a deleted opening scene consisting of a "home movie" from Buckaroo Banzai's childhood, narrated by Clancy Brown, who plays the character Rawhide. The scene depicts an early test of a precursor to the Jet Car, built by Buckaroo's parents and Dr. Hikita. The test ends in disaster, as the Jet Car has been sabotaged by the evil Hanoi Xan, leader of the World Crime League. The "home movie" ends, and dissolves to the present-day opening scene of the film depicting Buckaroo's test run of the latter-day Jet Car. Jamie Lee Curtis plays Buckaroo Banzai's mother, Sandra Banzai.
The novelization by Mac Rauch is told through fake documents written and compiled by Reno Nevada, and further expands on the backstory of the film, including the murder of Peggy Banzai (her twin sister Penny plays a role in the movie) by the minions of Asian crime lord Hanoi Xan, the deaths of Buckaroo's parents in an early Jet Car accident, and at least two other fictitious novels.
The 103 minute version released on DVD in January 2002 has a subtitle track that has director's commentary-style information that also has a fake documents feature. The entire packaging and literature with the DVD maintain a mythos that Buckaroo Banzai is a real person, the Banzai Institute exists, and that the movie is in fact a docu-drama of the real adventures of Buckaroo Banzai. The producers make claims such as they had brief tours of the Banzai Institute, and had met and interviewed several members of the Hong Kong Cavaliers, and that the script needed approval from the Institute.