Trivia: Paul Frees is the apparent "spokesperson" for the aliens. His voice is heard throughout the movie. He's also the voice visitors hear in "The Haunted Mansion" rides at the Disney parks.
Trivia: There was no balloon in Jules Verne's book. Thank to this film, most people now can't imagine "Around the World in 80 Days" without the balloon. (Gas balloon, not a hot air balloon as most people think).