I did not know about these films, and am surpeised that people came to an idea of making them to teach children what's going on in Japan.
The films were interesting and did helped me a lot to understand about the nuclear problem.
Also, they were funny!!! :D
However, same as Minori, I didn't really liked the English version. I felt uncomfortable watching it.
I think the movie(Genpatsu-kun) is done in it's way because poop is much closer thing for Japanese people. I mean that there are many books for children about poop and it isn't something strange thing for us. I guess there are some cultural differences of taking "poop."
I thought it interesting that there are people who understood it and who didn't.