Here's a couple of videos with Kovalev doing some fancy parlour tricks and then describing how to generate power with the 'whip-ness' of your stick.
Kovalev trick shots
Kovalev - generating power
If you haven't seen the HBO series 24/7, I highly recommend it (coarse language)
Here's a brief clip of life on the road with the Pens...
Pen's on the road