(Nikon D700, Nikkor 50 f/1.4D @ f/2.8, ISO 200, B&W Orange IR filter).
Nikon SB-800 at camera right, shot through an umbrella at 1/16 power with a light cool gel at f/8 zoomed to 50mm. Triggered via Pocketwizards.
I like shooting portraits with the orange IR filter on occasion. It gives a cool, moody look, which works for certain photos. It also translates to black-and-white extremely well and make cool hotspots similar to overexposing older films.