I know Teletubbies was criticized for not being educational:
http://news.bbc.co.uk/2/hi/entertainment/287940.stm
But I bet if the Teletubbies came back, they could make it more educational. Then I would definitely let Charlie watch the show! He loves the characters, but loses interest in the episodes themselves.
Would you let your LO watch Teletubbies if it came back?