Sagan's documentary is online for free.. See it now if you haven't, before it gets any older and its visual effects strain your suspension of disbelief too far.
Removed the link till someone can say it's legal.. Is Cosmos now public domain? There aren't any of the documentaries or TV shows/movies that would appear on a pirate website worth its salt.
edit - Only a couple of the parts are uploaded, so it's most likely not legit. Oops.