I use PDN every once in awhile, I be using it to design my business card here in a few weeks.
I shoot with a Nikon D40 and I had two flashes for the shot, one camera left in a reflective umbrella close to my friend and the other was camera right further off behind him to give separation from the background and help freeze the water. It was just a spur of the moment shoot so I didnt work too hard on getting the light perfect.