Me or the dog is very good and dog borstal isn't bad, though we only get to see the modified behaviour in the foreign environment of the school rather than in the home. Of course you have to give Dog Whisperer a mention too, if you've ever seen Cesar with his own pack of dogs it's pretty impressive, he really goes back to the roots of a wolf pack to work his behaviour techniques and they're incredibly effective.
I work in film and always wanted to think up some kind of Cat Whisperer format, retraining cats is rarely as interesting to watch as retraining dogs though so I don't know if it would go to TV, same as you don't see cat shows on TV but Crufts is massive.
Steve