Here are a few sketches from a few years back.
This is of Chicago guitarist Eric Lugosch whom I sketched while he was playing at a restaurant in Lincoln Square maybe around 2003. That's his signature on the picture. While the detail in the hands is obviously a mess, I was pleased with the simple accuracy of his face and posture. His signature and his hair was done with a fading brown felt pen that didn't scan very well, so I enhanced these details a bit digitally.
This is a self-portrait sketched in pastels on paper at an open house at the Hyde Park Art Center in Winter '07. It was done in a room themed as Andy Warhol style portraits; hung on the wall were various classic Warhol portraits (Marilyn Monroe, Jackie Kennedy, etc.) and we were encouraged to use bold, non-representational color to evoke the mood of the subject. At the time I was feeling kind of burnt-out about work, so I took the instructions pretty literally, as you can see.