This photo shows the surgeon threading a needle by hand. The scene is dramatically lit only by his headlamp, giving it a very strong dramatic vignette. This is actually a very unusual sight in the OR, as needles are normally prethreaded, and this would be the way surgeons would do it in decades past, which made the black-and-white seem more appropriate.
This was shot with my second body, a Canon 30D using the Canon EF 50mm f1.4. Exposure: ISO 320, f2.0 1/640 sec exposure. Note the exposure date was changed for confidentiality. Initially RAW processed in Apple Aperture and finished in Adobe Photoshop CS6.