This is a Malinois. Also known as a Maligator, A Mali-noise, a German Shepherd on Crack, and one of the most beautiful dog breeds ever.
They are crazy. 100% nutter. Barking mad. (Even the show-lined ones, but to a lesser degree than sport/Schutzhund)
I want one, but I know there is -no way- I'd be able to keep up with it. o-o So, I'll settle for the watered-down and slightly harier version... A Belgian Tervuren.
Quick doodle because I decided to remind myself why I love this breed so much. xD