According to the Farrelly brothers, Jeff Daniels wasn't wanted for the film, but Jim Carrey wanted him in it. In order to ensure a no from him, they offered Daniels $50,000 for the role. He accepted without any hesitation nor did he attempt to negotiate, despite insistence from his agent the film would "kill his career." By 1994, the film was Daniels' most successful.
During filming, Jim Carrey stayed the night at the Stanley Hotel and requested to stay in the infamous room 217 (see Stephen King's: The Shining). According to the tour guide at the hotel, about three hours after Carrey went to sleep, he came running out of the room and left the hotel. To this day, he vows to never go back and won't tell anybody why. It is said to be because he saw the ghost of his grandfather.
Jim Carrey was initially offered $700,000 to appear in the film. However, the offer went in the same week when Ace Ventura: Pet Detective (1994) opened at number 1 in the US box office, so by the time Carrey's agents had renegotiated with the film's producers, his salary had upped itself to $7 million, almost half the film's budget.
When the film went to the top of the US box office, it gave Jim Carrey the distinction of being the first actor to have three films go straight to number one in one year (those films being this, The Mask (1994), and Ace Ventura: Pet Detective (1994)).
The hotel, bar and Lamborghini scenes were shot at The Historical Stanley Hotel in Estes Park CO. The "We landed on the moon" photo in the bar remains on the wall. The Stanley was the inspiration for Stephen King's The Shining.
Although the ultimate travel goal was to reach Aspen Colorado, the actual town wanted too much money for film rights so many scenes were shot in nearby Breckenridge. The script however, was untouched. Certain shots were filmed in Estes Park, Colorado at The Stanley Hotel.
According to Jeff Daniels, none of the scenes between Jim Carrey and himself were filmed during the first week of production because the studio was fully prepared to replace him in the role, even going so far as to have a comedian on standby waiting to take the role. However, after viewing the dailies and constant insistence from Carrey that a real actor (as opposed to a comedian) play opposite him to "ground him", the studio ultimately allowed Daniels to keep the role.
The feature film debut for Peter Farrelly and Bobby Farrelly. They said years later that the main reason they got the job was that Jim Carrey's breakthrough film role in Ace Ventura: Pet Detective (1994) had been directed by someone who had never done a feature film before (Tom Shadyac) and after a positive first meeting with the Farrellys, Carrey decided to give them the job in hopes of replicating that success.
Bennett Yellin's initial draft of the script was apparently so disjointed that it had gained a negative reputation among film investors. After the script was re-written, it was pitched to producers under the fake title "A Power Tool Is Not a Toy", in order to get them to even read it.
The restaurant scene (with Seabass) was filmed in Ft. Morgan, Colorado. However filmmakers originally wanted to film this scene at a restaurant in Wiggins (about 15 miles west of Ft. Morgan) but after viewing the script the owner refused.
During the men's room stall scene, when Lloyd checks the time, the close-up of his wristwatch reveals it to be a "Casino Alarm Chronograph", suggesting it is a fake of the already, very inexpensive brand, Casio; it also lacks any of the dials found on a real chronographic timepiece, along with the 5, 6, and 7.
Among the many writings on the gas station bathroom stall are: "Why are you looking up here when the joke is in your hand?", "Bye Bye William Frawley", "NAMBLA Rules", and "Why the hell is everyone so goddamned angry?".
This is the second movie released in the same year in which Karen Duffy plays a character named Shay. She also played a character named Shay Stanley in Blank Check (1994). It was also the second movie released in the same year in which Jeff Daniels played a character named Harry. He also played Det. Harry Temple in Speed (1994).
In the scene where Lloyd is driving and playing with Harry while he's sleeping, there is Aspen on the Left and Lincoln Nebraska on the right with Lloyd going to Lincoln Nebraska, Lincoln Nebraska is the place in Yes Man (2008) (also starring Jim Carrey) is where he takes his friend to on there first trip together
In a scene that was cut from the film, Harry tries to reason with Andre about shooting him and Lloyd and states that if Andre kills them, he will be killing himself. On October 7th 2005, Charles Rocket (Nicholas Andre) committed suicide. He was 56.
Besides Jim Carrey and Jeff Daniels. Brady Bluhm (Billy) and Cam Neely (Sea Bass) were the only other cast members to return for Dumb and Dumber To (2014). However, Cam Neely only appears in the extra scene after the end credits in the sequel, which Harry and Lloyd foolishly chuck their milkshakes on the windscreen of Sea Bass's truck.
Lloyd punching his fist into the chest of the chef and ripping his heart out of his body in the dream Kung-Fu fight sequence parodies the video game Mortal Kombat (1992), which the character Kano kills his opponents by ripping their hearts out of their chests.
During Lloyd's dream sequence, when it looks like the chef has defeated him - he got brutally beaten up and literally had his head kicked in - Lloyd rises to his feet and says, "Eeuueh", to the chef who looks somewhat uneasy. Jim Carrey also says, "Eeuueh", in The Mask (1994) released the same year as this film.
An entire subplot was filmed involving Mary's kidnapped husband Bobby being kept in a wooden shipping crate, but was ultimately discarded. The brief scene where Nicholas and Shay discuss the snow owl incident had originally led into a scene where Bobby manages to escape while still inside the crate.
When Harry and Lloyd are trying to remember or guess Mary's last name while in Aspen, Lloyd can read the briefcase name as Samsonite but when he reads the newspaper after crying over a commercial he can barely read the newspaper. He had trouble with the words, the, annual and international.
In both the theatrical version and in the Director's Cut, Petey, Harry's pet bird's death happens on-screen. However, in the extended version. Petey is heard squawking and the sound effect of Petey's neck being snapped by Joe Mentalino is heard.
In the Limo ride scene, Mary tells Lloyd to keep his eyes on the road because he's not keeping his eyes on the road, when he is talking to her about getting killed on the way to the airport. This foreshadows Lloyd driving to Lincoln instead of Aspen in the Wrong Way scene, because Lloyd didn't keep his eyes on the road.