Did this in late September, while out at Nation's having a burger. It's tough drawing people and having them not see you. You've got to get your ninja on, so they won't see you. This guy was probably 30' away, so that helped.
Did it in Sketchbook Pro 2010. Took bout 10 minutes I suppose. A fun study in well.... either boredom or an attentive focus. Funny how the two seem so similar. Plus, he had a mustache. Pretty hard to find nowadays!