Supposedly alien planet: Music Halls and 1890-1930 style theatre/movie posters
50-year technology gap: "Teleportation" technology/magic
Within walking distance: Inidu's haunted house
The green powder magnifies Fitzhugh's voice as well as his image, although Inidu earlier said it only increased the image size of the original.
When Steve's image is "enlarged" by the green powder, he is standing stock still, although Inidu claims he was conscious and moving at the time.
The Spindrift isn't seen in this episode.
The two teens, Torg and Gort, have the same name, simply reversed and scrambled up a little.
Series regulars Stefan Arngrim and Heather Young are not in this episode.