- Before Anne Hathaway was determined to play "Agent 99", Jennifer Love Hewitt and Rachel McAdams were both under consideration.
- In 1998, when the film was still in the planning stage, Kim Carey had intended to appear in the film.
- Movie actor is driving a car Opel Bernie Keppel, who played Siegfried in the 1965 TV series of the same name in.
- Smartwas first played by Don Adams was born Yami called Donald. In order to show respect and miss for him, the name of an airline in the film is called.
- The three important cars in the TV series: a Shangbin, a Volkswagen, and an Opel GT, all appeared in the cast and crew subtitles of the TV series.
- Anne Hathaway fell while filming, and the skin outside her shin bone was torn apart and sewed 15 stitches.
- In the film, the leader wore a detective suit: a yellow cap, a red tie and a black trench coat. This is a parody of the famous Dick Tracy.
- James Kane played the role of president in the film. In life, he and Don Adams are not only good friends, but also good partners on the golf course.
- The tattoos on Dashi Johnson's body are real tattoos, which he had tattooed before. It's not just for the filming of the fake stuff that the makeup artist painted. The tattoo on his shoulder is a kind of boundless bull in Hinduism, and the traditional Polynesian pattern on his right chest.
- Steve Carell and B.J. Novak participated in the creation of the script, but their creation was not reflected in the final film.
- Copies of the film have been sent to various movie theaters under the pseudonym "The Believer".
Get Smart behind the scenes gags
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[Max walks in to See CONTROL in shambles. Looks over and sees Bruce and Lloyd underneath a table]
Maxwell Smart: Bruce! Lloyd! What happened here... and what is that ungodly smell?
Lloyd: Fear.
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Agent 13: Are you coming back this way?
Maxwell Smart: Oh... Yea, maybe.
Agent 13: What time?
Maxwell Smart: Oh... Mmmm...
Agent 13: I get it... I get it... No one wants to talk to a guy in a tree, I get it.
Maxwell Smart: Please don't cry... just... don't cry.