Just a grab shot while walking along Congress Ave. yesterday with a Sony a77 camera set to black and white, and a 70mm Sigma 2.8 macro lens clamped onto the front. I enjoy using the a77 as a black and white camera because the image preview that I see, real time, in the finder, shows me exactly how the image will render when I push the button. I like that. Much better than looking at a color image, trying to imagine it in 2-D and then trying to imagine how it will look after the monochrome filtering.
Also, I think the Sony does well with the skin tones in black and white.