ultimate joe video podcast

http://ultimatejoe.com/UltimateJoe/Subscribe.html

It's a show about this overweight guy who wants to lose weight so he starts undergoing intensive mma training.

There are a lot of instructional clips for boxing, kickboxing, and grappling, with the grappling being taught by Jake Shields. A lot of the stuff is very basic because the guy never trained anything before, but it's still an interesting watch. You can download all the episodes for free.