Trivia: I wouldn't want to stay at the hospital that Gadget was staying at. When Penny runs into the room with the man in the body cast, someone on the intercom is saying 'Paging Dr. Howard, Dr. Fine, Dr. Howard. Paging Dr. Howard, Dr. Fine, Dr. Howard.' The Three Stooges were Curly Howard, Larry Fine and Moe Howard.
Trivia: When evil Gadget is doing the shadow, it's actually a mimic of the Lost World, most easily noted by the Japanese salesman being translated I left Tokyo to get away from this. However, in The Lost World it was not translated, and filmmakers thought a line that good should be recognized.