19. G.I. Joe

"Yo Joe!" "Cobra!" "Now I know... and knowing is half the battle!" If nothing else, this series gave all children of the '80s plenty of iconic battle cries and proclamations. One of several toy-inspired animated series of the era, G.I. Joe was the most entertaining of the bunch, thanks to the many fun characters the toy line provided. Even the things that are silly about it -- wow, those Cobras sure could parachute out of any plane they were in that was shot down, huh? -- are somewhat endearing. And while this isn't a show known for its gritty realism, there were some blissfully strange and interesting occurrences, as we followed the Joes and Cobras through weather domination, the creation of the clone emperor Serpentor, a trippy journey to an alternate reality (Baroness and Steeler in love!), and of course, the musical bliss of Cold Slither.