When we are talking syndicated TV cartoons, Masters of the Universe had some really neat carded figures. Ghostbusters too. The LJN Thundercats are pretty awesome. Most M.A.S.K. stuff came in boxes with figures/accessories in baggies so while they aren't a good example of carded/blister line toys, they do represent some of the coolest toys made from that time period.
From the point of view of carded/blister toys, I'm partial to the packaging on Star Wars because it locks into some of my earliest childhood memories, but even when compared to the packaging of toys today, they really stand-up well (especially the 12 Backs) when you're talking about their overall quality in appearance and presentation. Less known TV shows like Captain Power achieve all these things as far as quality toy and packaging, but they just don't have the same memory attachment with late 30 and 40-somethings as the big TV cartoon shows like GI Joe, Transformers, He-Man and Thundercats.
I love those M.U.S.C.L.E. characters! Those bring back some great memories. Wouldn't mind tracking down a package...