Fun fact: Arthur is the second longest running animated series in the US, second to the Simpsons.
Alot of people don't like the newer character Ladana.. but her brother Bud is hilarious. Usually I hate the DW focused episodes, but DW and Bud's Higher Purpose is one of my favorite episodes because Bud kept making me laugh in it.
Arthur is a really amazing show that I admire so much for tackling the issues they do. They even had lesbians on the spin off Post Cards from Buster (which was later on banned -_-)
But yeah while most kids shows keep it safe with "Don't steal" and "Be nice to others" Arthur's done an episode on cancer, how to deal with trauma of seeing a disaster (this was in response to the 9/11 terrorist attacks, I mean wow how many kids shows did that?) and even what it's like to have aspergers. It's truly an underrated show and even though a lot don't like the newer animation, I'd say the writing is just as strong as it is now as it was back in earlier seasons.
except for Arthur's big Hit, that was just terrible