the show has been on tv since november 10, 1969. jim henson made the muppets and a lot of writers and puppeteers worked together to make the show. the muppets were used afterwards in a different show called "the muppet show". "sesame street" has been on tv in 120 countries all over the world. more than 4000 episodes have been made over 50 seasons. one unique feature of the show is that the episode number appears at the start of each episode.