Earl Devereaux has the exact opposite hairstyle of his voice actor, Mr. T. Instead of a T-shaped mohawk, Earl sports a T-shaped bald patch.
To make the sound of falling hamburgers, sound officials used wet rags and slapped them on wood. Snapping celery was used to make the sound of bones breaking.
(At around 67 minutes) Flint's e-mail address is flockwood@flinternet.com. At the time of the movie's release, going to Flinternet.com would redirect you to the movie's official website.
Neil Patrick Harris was originally offered the role of Flint, but he felt that the role of Steve was much more interesting.
In Israel, the film's title is "It's Raining Falafel". In Turkey, the title is "It's Raining Kofta".