I bought some cattle handling system videos from I think Praire Farm Report(?) to get ideas before building our system. I don't know if that is what you are talking about or not, but either way, they probably have some specifically on cattle handling. They are advertised on RFD sometimes, so I'm guessing you could find a link if you went to their website.
Bud Williams is the "Man", however his video is not all that great quality recording wise. Best thing if you have many head is to spend the money and go to his stockmanship school. But I heard he may not be holding it these days...check the website.