I do a bit of clicker training. I absolutely love it. Kai knows that the click means he's done a good thing and has even done a little 'dance' when he heard the click. It really helps with the more precise commands too. I tried teaching Kai to put his right paw on my right foot and his left paw on my left foot which could be really confusing for dogs but since he knew that the click meant he did it correctly, he'd keep trying til he got it.

There are some people who do something similar to clicker training except they make a sound with their tongue instead of using the clicker. It works the same way but you'll always have your 'clicker' with you.