I found this in a "Family Favorites" bin in a Walmart this weekend (after checking a few other Walmarts where it was absent). Good show and my children like it. Great opening song by Gary Lewis (). One thing I like about cartoon shows of this vintage is how the voice actors would fall back on celebrity voice impersonations to create characters. The voice of one of the Super 6, Super Boing, seems to be based on a young Jimmy Stewart. The villain in one episode, who is described as "enemy of everything good and decent," sounds like James Cagney in full "you dirty rat" mode. In Underdog, I always thought that Simon Bar Sinister was based on Lionel Barrymore, and I recall thinking that the leader of an alien planet sounded a lot like Charles Laughton (imagine Laughton saying, "We have the most delicious rocks in the universe," and you'll get where I am coming from). $5 for the complete series on two disks -- what a deal -- I want more!