As a trainer I can tell you not only do I not agree with his "methods" but I don't agree with his theory either!
What is his theory?
From the answers I can see that Cesar is not a very popular between dog trainers and this says a lot. I won't take in consideration his advices anymore.
This link explains his theory and why so many of us in the dog training community do not approve of the methods he uses...I would love to see him try his aggressive and abusive training methods with my almost 130 lb Akita who's spirit has not been broken..I doubt he would have much of a face left..A breed like mine needs to be trained in the complete opposite way Cesar des his so-called "training"!!
The first link is one of a professional working with and training a dog who is dog aggressive when he's out for awalk and the second link is Cesar's way of doing thing..Which way would you want your dog being treated?