Christian Slater was originally cast in the part of Igor, but dropped out at the early stages of production.
Scamper was originally to be introduced while hanging himself as Igor returns to the castle at the beginning of the movie. This is included in the novelization of the film but was cut from the actual release.
'Schadenfreude' is a German word meaning a feeling of pleasure caused by something bad happening to another person.
This is the second time the song "I Can See Clearly Now" has been used in a movie starring John Cusack.
There are many audio/visual errors throughout the movie. This is because the filmmakers slightly changed the script right before a release.