Filmation Studios (http://en.wikipedia.org/wiki/Filmation#Filmography) ranks one of the most underrated animation studios ever. Even though their animation was a notch below Hanna-Barbara Studios who themselves pioneered the use of stock footage to reduce costs (they used the same figures AND the same scenes), they balanced it out with great moralistic stories and exemplary voice-acting (the general studio cast included Filmation producer Lou Scheimer and his wife and daughter) and music. Although I want to say FAT ALBERT (one of Filmation’s first and most special, path-breaking works, plus Bill Cosby), my vote goes to He-Man. That was the studio’s breakout show: a fantasy featuring Superman the Barbarian and Prince Adam Kent, a combo of both magic and tech, some great stories, and most significantly Allan Oppenheimer as Skeletor, an evil wizard who could also be a source of great humour (see him rant at He-Man or at one of his henchman’s screw-ups). Oppenheimer played most of Filmation’s villain, and his performance as Skeletor ranks amongst one of his best ever.