>> "sesame street" was aggressive in terms of learning not only concepts of reading, but concepts of interacting. >> i may be small. >> i may be small. >> but i am. >> but i am. >> somebody. >> somebody. >> "sesame street" was as big as it got in terms of celebrity. everybody wanted to hang with the muppets. >> aren't you johnny trash? >> cash. >> cash, cash. >> educational children's television really matured in the '70s. >> i'm leaving. >> i love you. >> i love you, too. >> oh, thanks. >> now for something completely different. >> when i was 13, the show from england came on pbs, which befor...