Musician and educator Brad Sharp has spent some time scooping up links to jazz videos at YouTube. His Jazz Video Search page has a ton of links, organized by instrument and then by musician. He's got the musicians listed chronologically by date of birth, a very interesting way to view the history of jazz. I don't remember ever seeing a list that includes both Buddy Bolden and Chris Potter.
Warning: Only go there if you have some time to burn, because there are many hundreds of jazz videos represented on that page. And you WILL get mesmerized, I guarantee.
Here's some rare footage of Charles Mingus' Quartet I found via Brad's list: