I love the similarly names youtube thread, so I thought that I'd start one for Netflix instant / Amazon streaming as these seem to be the new cable as I feel like I'm often scrounging for something "good" to watch.
I'll start it off:
Just watched "Secrets of the Viking Sword: Nova"
Which wasn't mind-blowing, but was interesting. Apparently vikings had a few swords with very similar metallurgical properties as crucible-made wootz/ damascus hundreds of years before the rest of Europe caught up. The documentary talks about the history and also follows a modern swordsmith though his process to re-create one.