Am doing the brainpop free trial right now. My DS8 likes it, but isn't in love - I can see it being a really good supplement however and he certainly wouldn't complain about doing it. My DD5, however, adores it. She is mostly watching Brainpop right now, not brainpopjr, and she can't do the quizzes, but she loves the way she can click on related subjects. I haven't actually sat down to study the differences between jr and regular, but it is a hit so far.