Adored by the Network: Ted Turner loved this series.note Hardly surprising, since the show was his idea in the first place. However, most people didn't, not just because it was preachy, but it played a part in how SWAT Kats got screwed over.
The Danza: Joey Dedio as (Joey) Wheeler. Subverted in that Wheeler was hardly if ever referred to by his first name.
Fake Russian: Linka's American voice actress, Kath Soucie. "Linka" isn't even a valid Russian name. It could conceivably work as a nickname. You might call a girl named Galina "Linka", for example, but, as a proper name, it's more West Slavic.
Germans Love David Hasselhoff: Australian kids love Captain Planet unironically, and even the snarking over the silliness is more out of love rather than out of regret and the sense of "What the hell were we thinking, watching this as kids?" like it is in North America (specifically, the United States).
A lot of Australian children born in the late 80s to very early 1990s will fondly remember watching Captain Planet. Not only was it on the free-to-air channel The ABC, but it was in a perfect timeslot with popular shows on either side of it. Sadly, to the despair of several viewers, the ABC no longer has broadcasting rights.
Hey, It's That Voice!: The celebrity voices were usually played up, but some of them required a more careful ear.
"Funny Aneurysm" Moment: The HIV-stricken teen Todd was played by Neil Patrick Harris, who did the role for now-obvious reasons (i.e., Harris is gay and the character he played was accused of contracting HIV from unprotected sex with his male friend, rather than a blood transfusion gone wrong).
You might not think Verminous Skumm looks like Jeff Goldblum but he's got that look in his eyes that's unmistakabley his.
Keep Circulating the Tapes: a few VHS tapes containing 1-2 episodes were released a ways back but they are now out of print and very hard to find. Shout! Factory did release season 1 to DVD but never released the rest of the series due to low sales.
Prop Recycling: The first episode of had Hoggish Greedly attack Planet with a hose that spewed toxic waste; it looked very similar to the neutrona wands on the Ghostbusters' proton packs (both series were made by DiC, although Planet moved to Hanna-Barbera later on).
Word of God: The executive producer of the show, Nick Boxer, once pitched the idea of removing Captain Planet, the show just being the "Planeteers". But Ted Turner rejected the idea, so the team attempted to find way to keep the Planeteers empowered while Captain Planet did the heavy lifting. One way they did this was having the kids rescue Captain Planet himself when he is downed from time to time by the villains. So in a way, while Captain Planet does do the heavy lifting and rescues the Planeteers, when Captain Planet is down, the Planeteers, without their powers, must work together and rescue him as well. So in a way, the producers attempt to avert a Broken Aesop.
The exaggeration of the villains to the point of cartoonish supervillainy meant that children watching the show would not be troubled by their parents if they worked in a polluting industry. Loggers for example are not monsters but had they been portrayed as such that could have caused confusion and conflict, so the bad guys had to be as over the top as possible.
A producer was unsatisfied with a number of facial designs for the Captain until one of the artists finally submitted the producer's face as a joke... and to make a longer story shorter, that is why Captain Planet looks like Mr. Boxer (though one would suspect the latter never had a green mullet or the superhero musculature).