Vieras tulevaisuudesta

The jellyfish attack sequence used a combination of puppets, computer graphics imagery, and footage of real jellyfish, filmed at a nearby aquarium. The footage of real jellyfish was played at three to five times its normal speed, to make the jellyfish appear more aggressive.

When Jerry first makes contact, he transmits in code : "MY NAME IS JERRY". Later, the code is revealed to have been mistranslated and the message reads: "MY NAME IS HARRY" If the letters H, E, J, and A in the simple letter/number substitution code were wrong, the first message would have read: "MY NEMA IS JERRY". Also, the entire series of conversations they had would have exhibited the same error, yet none did so. (HAPPY would have been JEPPY, ALL = ELL, etc.)

The opening credits are cast over an invisible sphere.

SPOILER ALERT: An alternate television edit has been shown with a simplified and more ambiguous ending that follows the shooting script; Harry warns them that the authorities are on their way to debrief them, and they will demand answers. The three survivors ready themselves to forget about their mission and the power they possess. Outside, a helicopter sets down. Subsequently, we see the three survivors being interviewed in a debriefing room after decompression, each shot individually against the same background. They react as if they're oblivious to anything going wrong in the Habitat, unaware of anything that happened to Ted, Barnes or the Sphere. The helicopter leaves, and the camera pans down to the ocean, where the Sphere supposedly still remains.

Featured in Siskel & Ebert & the Movies: Blues Brothers 2000/Illtown/The Replacement Killers (1998)