Once in a while an e-mail pops into my inbox out of the blue with a photo attached and a note saying, "You don't know me, but I snapped a picture of you the other day when you were working...."

Invariably, I had no idea that the photo was ever taken—I'm concentrating too much at the time and tuning out distractions—so these always come as a fun surprise.

The photo at right is different, because this time I accidentally caught myself—in the mirror.

Click the photos to enlarge