I'm far from being a Caillou apologist, but putting it below, much less way below, Pepa Pig is rather harsh.

Fair enough, my kids are older now, so my memory isn't too fresh. And I despised both of those enough that I didn't get much of a sample size! Man could I not stand Caillou though.

It's easily the worst PBS Kids show I've seen, which makes it average for children's TV.