I don't really have a lot to say because I like every show on PBS, but if you're looking for a quality show, this is definitely one to watch. You learn things about the Earth that you wouldn't be able to find almost anywhere else.
NOVA is a thought-provoking series that covers interesting subjects in language, history, science, and math...all subjects! Some talk of AIDs, gender, and other remotley sex-related topics, and some talk of terrorism and wars. Language, which is remote, is beeped out. A must-see for families. Some younger kids may not understand what is being talked about, but there's nothing really to be concerned about. Awesome!