While filming the scene in the bar where Carl runs into a waitress and falls on his back, Jim Carrey did the stunt incorrectly, fell to the floor harder than he expected, and broke three ribs in the process.
One of the most terrifying shots for Jim Carrey was the one with the dog in front of him after saying "no" for the first time after attending the seminar. The rope actually broke several times during filming.
Based on an autobiographical book written by Danny Wallace, a British author, producer, and journalist who spent a year answering "yes" to any given question or proposal, and recording the results.
Jim Carrey declined an upfront salary for this film. Instead he was paid 36.2 percent of the film's profits.
Just like his character, Jim Carrey said "yes" to many things during the production of this movie. He indeed truly played the guitar, learned basic Korean, rode a sport bike and bungee-jumped. He, however, had to say "no" for the body blading scene.
Danny Wallace: The writer of the book upon which the film was based can be seen sitting at the bar during the wedding shower.