Trivia: Fantastic Four creator (and Marvel editor-in-chief) Stan Lee has a cameo as Willy Lumpkin, the Four's mailman. It was his only Marvel movie cameo based on an actual comic character.
Trivia: Gene Barry and Ann Robinson, stars of the 1953 version of this movie, make a small cameo in this movie as Mary Ann's parents. They are at the end when the whole family is reunited.