In the pilot episode, MacGyver's aversion to using guns isn't yet established. When the Mongolian soldiers open fire on him, he returns fire with an assault rifle before handing off the gun to the rescued prisoner.
Milk chocolate stops a sulfuric acid leak. This MacGyverism has been confirmed to work by the Mythbusters.
Colson: The only way to get down to the first level is through the elevator, and we can't even open the doors up here. The whole shaft is protected by laser.
MacGyver: Infra-red or gas discharge?
Colson: Gas. CO2, 10,000 watts.
MacGyver: You take your elevator shafts pretty seriously.
MacGyver: The bag's not for what I take, Colson - it's for what I find along the way.
Gantner: They calculate the chances of anyone getting through to Marlow and Stubens is... well, it's not great.
MacGyver: Well, give me "not great" on a scale of one to ten.
Gantner: Minus three.
Barbara: I'd kiss you, MacGyver, but I've got this cold.
MacGyver: So what's a little cold between friends, huh?
Barbara: Don't tell me you know how to make a bomb out of a stick of chewing gum?
MacGyver: Why, you got some?
The helicopter that flys MacGyver and Gant to the New Mexico desert is "The Special", the advanced military helicopter which was the star of Columbia Pictures' 1983 film Blue Thunder.
A scene which would have given MacGyver the first name of Stace was cut before broadcast.
Michael Learner is listed in the opening credits just after Richard Dean Anderson, suggesting his role was intended as a permanent one. His character, Ed Gantner, fills the role that Dana Elcar takes on semi-regularly in Season 1 and full-time afterward.
The scenes at MacGyver's home were filmed at the Griffith Observatory in Los Angeles.
The German episode title is "Explosion unter Tage", meaning "Underground Explosion".
Appearing here in an unrelated role, guest Dana Elcar goes on to play the recurring role of Pete Thornton later this season, which becomes a starring role in the second season.
Many transmitted versions of this episode credit the director as Alan Smithee – which is a cover name for a director who does not wish for his/her name to be associated with the finished work, often because the film or episode was heavily recut. The actual director was Jerrold Freedman.