One of the assignments for the studio portrait I am taking was to take a low-key portrait shot.
Lacking a handy model, I used myself.

This was lit using a single Alien Bee B00 monolight with softbox as the key light and a Promaster 7500 DX
flashgun sitting on the laptop keyboard in slave mode to help light my face, without blowing out the white
on the computer with the main light.