These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
General Kala's outlandish outfits and strange body language remind one quite a bit of Lady Ga Ga. They even look a little alike. Considering that Lady Gaga's stage name comes from a Queen song...it's enough to blow your mind.
Memetic Mutation: "Pathetic Earthlings! WHO CAN SAVE YOU NOW?!?!"
Someone writing in a newspaper in the UK hoped there would be an election while Sir Menzies "Ming" Campbell was leader of the Liberal Democrats, just because that would make it "Ming vs. Gordon." Sir Menzies was called "Ming the Merciless" and compared to him on occasions.
Memetic Mutation: When this came to the UK, the Sci-Fi Channel decided to do an obvious pun on the current UK Prime Minister, i.e. "Only one Gordon can save us now".
Dork Age: The animated series from the '90s had Flash and Dale riding on hoverboards. Yes, hoverboards.
Freud Was Right: Applies mainly to the comic strip. Why else does Flash use his sword instead of his raygun? And check out those rocketships!
Rule 34: There is porn of it. Specifically, Flesh Gordon, a '70s softcore romp which has a cult following of its own, largely due to this. (Yes, it's work safe, as long as your boss doesn't hear the expletives.)
What an Idiot: In the city of the Hawk Men, Gordon has a really bad moment where he suggest Thun to take cover behind a door. And the signals around the doors read like "Dragon's Pit" and "Death".