I've watched every episode of the original series so many times I've worn out the tapes. I don't care. I still watch them and learn more every time. I love history and James Burke makes it even more fun and interesting to me. I am particularly enamored of the sequences that deal with military history and the advancements of weaponry. 'The Long Chain' and 'Thunder in the Skies' ranks as superb in my book I wish I knew more people that love this series as I do, to chat with them about it. The other series that ranks as a winner is 'The Day the Universe Changed' which carries on in the same genre but deals with social concepts and their origins. Watch them all, and have fun learning.