Love this testshot during the final part of the 2-day Motivational Light workshop I was teaching at Gulf Photo Plus Fotoweekend. (check www.gulfphotoplus.com)
Got some video taken behind the scenes, so I'll keep the technical description short: Two bare speedlights behind the models (als you can see in this test shot). Another bare speedlight to camera light to lift up the main light on the subjects a bit.
Check out my blog: www.bertstephani.com/blog
and my lighting DVD: www.motivationallight.com