This is a good article on Man Ray from Fast Company. I recently saw an Ovation TV program on the influence that Man Ray, among others such as Alexander Rodchenko and August Sander, had on the development of photography as an artistic medium. He had a revolutionary eye, and his work is just plain cool.
Be sure to set your DVR timers for the upcoming re-broadcast of the program: The Genius of Photography: Document for Artists. It airs several times in late November on Ovation TV.