I've been saving these up for a while:
Library, Unknown Location: An awesome panorama that makes you feel like you're there - at first, I thought it was the Prunksaal in Vienna, but it's not.
Brick Labourer in Bangladesh: This video is short, but really amazing - I can't imagine doing this without crushing myself!
Universal Packing List: I wish I'd had this ages ago, though I'm usually pretty good about packing light and efficiently. It seems like a great tool, I'll have to try it sometime and do a review.