Avatar: The Last Airbender

TV on Netflix is great; you can get all sorts of "old" stuff to watch.  I decided to watch this original Nickolodeon series, on which the horrible movie The Last Airbender was based.  The original series is fantastic!  Designed for kids, but it's still good entertainment, with good writing/anime-style art.  Definitely worth watching, especially if you have some young kids of the right age.  I suspect that around 10 years old is the target demographic.