Well, it's official. "Arthur" is now the second longest-running North American animated series, with seventeen seasons and counting (second behind "The Simpsons," of course.) I am actually very impressed by that...
(BTW, third is "South Park," and then "King of the Hill," but that will soon be surpassed by "Family Guy.")
Though looking back, some of the early episodes from 1996 are pretty strange when you compare them to episodes from 1998-2003... LOTS of animation problems and continuity errors abound!