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Trivia: The paintings in the Robinsons' place are signed by Ruppel, aka Robh Ruppel, the art director of the film.

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Trivia: Director Stephen J. Anderson plays the voice of Bowler Hat Guy, Grandpa Bud and Tallulah.

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Trivia: The logo of the baseball team where Goob plays is a tribute to the book Dinosaur Bob, also written by William Joyce.

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Trivia: The elementary school is named Joyce Williams as a reference to William Joyce, the writer of the book on which the film is based.

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Trivia: A reference to the DeLorean from Back to the Future - on Louis' notebook there is a drawing of a flying car with the tires in horizontal position.

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Trivia: In Louis' room on the wall there is a Walt Disney picture beside Nikola Tesla.

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Trivia: Towards the end while Louis and Wilbur are calling Goob, on the bushes there is the Mickey Mouse logo but head down.

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Trivia: Bill Romanowski who plays the role of guard Lambert, and Michael Irvin who plays Deacon Moss, played professional football for the NFL.

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Trivia: Rob Schneider makes his usual cameo in Adam Sandler's films during the last game among the inmates.

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Trivia: The original theme can be heard when Robocop is shown in public.

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Trivia: Outside the airport John says his classic line "I'll be back" to Bennett.

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Trivia: At the theater where Evan and the others go, the films Seven and Dumb and Dumber are shown both from the maker of this film, New Line Cinema.

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Trivia: William Smith who plays the father of Conan was also a bodybuilder and was offered the opportunity to play the role of Conan but refused.

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Trivia: Kiyoshi Yamazaki who was the instructor of Arnie, Sandahl Bergman and Gerry Lopez makes a cameo as the Conan fighting instructor.

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Trivia: The way Kick-Ass looks at the mirror and when he tries to jump over a building resemble the way Tobey Maguire did in Spider-Man.

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Trivia: At the theater Clayface is watching "The Terror" a movie starring Jack Nicholson, who played the Joker in 1989's Batman.

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Trivia: The psychiatric hospital where Evan goes is the same on seen in Halloween: Resurrection and Final Destination 2.

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Trivia: Director Tom McGrath plays the voice of the foster father of Metroman and one of the prison guards.

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Trivia: The guys infected by the serum Titan are very similar to Amigdala another enemy of Batman.

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Trivia: At the morgue there is a corpse which later disappears, that body belongs to Ra's Al Ghul, famous for endlessly returning from the dead.

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