- Awesome Music — The theme by Barry Gray.
- Germans Love David Hasselhoff: Ed Bishop said in an interview that it was his understanding that the show was "big in Japan." And, well, the series happens to have been a main inspiration for Neon Genesis Evangelion.
- Hilarious in Hindsight
- A vastly-expensive space-telescope project fails due to a minor fault in the camera; that would never happen in real life of course.
- Straker's prejudice against a privately-operated moon-mining operation seems ironic given the push for privatization in the real 1980's.
- References to the Skydiver's jet "Sky One" are odd now that it's the name of a TV channel.
- Spiritual Licensee — The 1994 video game UFO: Enemy Unknown, also known as X-COM: UFO Defense, which borrowed thematically from the series to a great extent.
- Values Dissonance — The excessive Fanservice is the most obvious factor, along with military professionals wearing miniskirts (Something it shared with Star Trek). It also mostly falls into the "men do the fighting, women do the support roles" paradigm, but women in positions of authority (Colonel Virginia Lake, and Lieutenants Gay Ellis and Nina Barry) are treated as competent professionals, and engaged in some physical violence.
- Visual Effects of Awesome: The use of miniatures is obvious, but Gerry Anderson and FX supervisor Derek Meddings really knew how to work with miniatures. Compare the special effects in this series to those in Star Trek: The Original Series (just a couple of years before) or contemporary (or even later) Doctor Who episodes; UFO looks astonishingly good in places.