Great Kids' Educational TV

My kids are fascinated with a new discovery we've had on YouTube--Pitagora Suicchi, a Japanese Educational Math/Science show. It's all in Japanese. Some of it is subtitled, and some is not. You can access it from this website: http://en.wikipedia.org/wiki/Pitagora_Suicchi There are several links at the bottom of the page, and you can also follow the links in YouTube.com to find more episodes. Both kids are absolutely fascinated with the whole thing, but especially the "incredible machines." And they might learn some Japanese in the process!