http://www.youtube.com/watch?v=uxkRKd_Ujkw Perfect technique...Knees bent,Loose wrist generating whipping action and great racquet head speed. He is gradually moving his way around the hoop of the frame after every swing, planting his right foot, pivotting and swivelling onto the left foot. Good distance between his body and the contact point where the racquet meets the court. Good use of upper body rotation when releasing the racquet and lifts left leg to maintain balance.
How about Murray's technique? AFAIK he did that twice in the tournament (against Djokovic and Dolgopolov).