Do you know any free online video archive?

Question:

I'm going to make a documentary film , so need some video clips, I hope downloading them from internet , do you know any (FREE) website?

Additional Details

5 months ago
I know all of them, but I need high quaility (e.g. DVD quaility) videos .

Best Answer - Chosen by Asker:

There are quite a lot of it, but here are so far the ones mostly visited:

Youtube
Yahoo Videos
Google Videos

Just search them on the internet