* AwesomeMusic -- The theme by Barry Gray.
* GermansLoveDavidHasselhoff: Ed Bishop said in an interview that it was his understanding that the show was "big in Japan."
* HilariousInHindsight
** A vastly-expensive space-telescope project fails due to a minor fault in the camera; that would never happen [[http://en.wikipedia.org/wiki/Hubble_telescope#Flawed_mirror 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.
* SpiritualLicensee -- The 1994 video game ''UFO: Enemy Unknown'', also known as ''{{X-COM}}: UFO Defense'', which borrowed thematically from the series to a great extent.
* ValuesDissonance -- The excessive FanService, and the fact that men do all the actual fighting, makes ''UFO'' appear rather sexist now, though in fact the series consistently portrayed several women in positions of authority (Colonel Virginia Lake, and Lieutenants Gay Ellis and Nina Barry) as competent professionals. In this respect, ''UFO'' [[FairForItsDay did much better than other sci-fi series of the time]], including ''Series/StarTrekTheOriginalSeries'', first broadcast only four years earlier.
** I wouldn't call a show sexist just because the women in it do not fight. Additionally most of them (e.g. Gay Ellis and Nina Barry) were seen or implied to have been in a variety of scuffles and definitely in general fighting situations. Quite a few of the female guest stars were fighting one way or the other.
* VisualEffectsOfAwesome: 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 ''StarTrekTheOriginalSeries'' (just a couple of years before) or contemporary (or even later) ''DoctorWho'' episodes; ''UFO'' looks ''astonishingly'' good in places.
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