Cosmos: A Personal Voyage is one of the most famous documentaries that aired on TV.
With Carl Sagan as presenter, millions of people were (hopefully) educated and inspired by his knowledge and his story-telling.
30 years after the initial broadcasting, the show returns under a new name: Cosmos: A Space-Time Odessey. Presenter: Neil deGrasse Tyson.
FOX and NGC will start broadcasting the series in 2014.
Here is a preview:
http://www.youtube.com/watch?v=gklrONZ51w8