The Giants' phones are back to six digits again.
50-year technology gap: electronic force fields, small coin-sized attachable listening devices
Within walking distance: Yet another SID Headquarters, a bank
(talking about Fitzhugh)
Inspector Kobick: Do you want me to take the fat one back to your spaceship?
Even the Giants' streets have alien names: there is a reference to Agar and Odin Sts.
Series regular Stefan Arngrim is not in this episode.