The idea for this film came from Tony Alfaro getting access to the costume for one night. Getting a group together, they shot most of the film in just one night, only needing a few additional shots on a later date.
Vin Parr plays both Curious George and the Man in the Yellow Hat.
The film is shot for shot the final scene of Halloween (1978), with only a couple shots lengthened or shortened. Also, the shots with the kids were removed for plot reasons.
Melissa Armstead, Cody Blumenthal, and Bo! Campbell were the official banana throwers when George is "shot" with the banana gun. The shot to the head was actually a mistake.