Trivia: At one point in the movie, when the Chief is talking to the President, the President says "nucular weapons" once or twice. Frustrated, the Chief says something to the effect of, "For the last time, it's nuclear." This is an obvious jab at President George W. Bush, who was notorious for invariably saying "nucular" instead of "nuclear" when giving speeches.
Trivia: In the scene in which Max drives the convertible out of the museum, all three cars shown - the red Sunbeam Tiger from the museum, the gold Opel GT driven by Bernie Kopell, and the blue VW Karmann Ghia convertible - were all cars driven by Maxwell Smart in the original series.
Trivia: The original Siegfried, Bernie Kopell, makes a cameo as the driver of the Opel that nearly hits Smart. Unfortunately, other members of the original show were not able to make appearances: Don Adams (Maxwell Smart) - died September 2005. Edward Platt (Chief) - died March 1974. Robert Karvelas (Larrabee) - died December 1991.
Trivia: When Maxwell Smart and Agent 99 are flying to Russia, the airplane they are on reads Yarmy International Airlines. Yarmy was the real life last name of actor Don Adams, who played the original Maxwell Smart in the TV series. He was born Donald Yarmy.
Trivia: There is a wanted poster for Mr. Big seen in Max's apartment during the movie's opening credits. Mr. Big was the villain in the TV show's pilot episode.
Trivia: At the beginning of the movie, it is showing notes that Maxwell Smart is writing. One of the notes mentions 'The Claw'. The Claw was a villain on the original "Get Smart" TV series, starring Don Adams as Maxwell Smart.
Trivia: James Caan appeared on the original show, Get Smart, as Smart's arch foe with the condition that his credit was listed as "Rupert of Rathskeller as himself" in "To Sire, with Love".
Trivia: Leonard Stern, the executive producer of the original series, has a cameo as the pilot of the plane that the Chief hijacks.
