As I have said in the past, I'[m not a fan of Photo-shopping my pictures, much preferring to show them as taken, warts and all. I'm a firm believer that the more you get right in the camera, the less you have to do after the fact.
Here is a shot I converted to Black and White, the Rhythm Guitarist was performing a sound check before they went live, and originally bathed in deep blue light. My Nikon D2x can shoot in pure Black and White mode, but at the time I didn't want to miss any shots, so it was done in colour. I feel the image is better this way, so here it is.