Who didn't love the original Teenage Mutant Ninja Turtles cartoon from back in the day? First airing on television in 1987, the popularity of the show remained throughout it's long show run and also remains to this day among fans of classic t.v. It would probably be pretty difficult to find anyone who wouldn't include the original TMNT in their list of best animated television shows.
The Huffington Post has a great, insightful article with cool factlets about the show. Check it out here.