About a minute into the opening, the man in the alien suit walks in front of the courthouse and Floyd's barbershop in Mayberry of the Andy Griffith Show.
After the villain (Alvin) in the spacesuit breaks the second window (in the opening scenes) he walks by the building later used as Andy Taylors Sheriffs Office on the Andy Griffith Show. The building with the large pillars.
In yet another The Andy Griffith Show tie-in, actor Fred Sherman, who plays Dr. Oscar Jessup here, also played Fred Goss, owner of the dry cleaner in The Andy Griffith Show.