If you have ever wondered what they are saying, what the motivation is behind or what the random facts are about your favourite You Tube video, Wikitubia is the place to go.
Wikitubia is a wiki for all of You Tube. The pages that I have read were quite informative. The one on Charlie the Unicorn even had the entire script included.
If you know what you are looking for the page is fine, but if you are just browsing in general the page seems a bit cluttered and the navigation sucks.
It is not as good as Wikipedia yet, but check it out.