<p>If you have any sort of repeating strobe light, such as Canon or Nikon speedlights, or a strobe for disco use, such as used to be sold by Radio Shack, you have what you need. Darken your studio area essentially completely, decide where the model will perform his/her moves, focus your camera appropriately, open the shutter on bulb, start the model, start the repetitive strobe flashes, and you're done! You will wind up with multiple "poses" in motion, all on the same exposure, just as Doc did in your examples. Getting multiple poses is easy; getting good ones is harder, but can be done with no additional equipment.</p>