People engaged in mental action

These photos could be of artists, athletes, craftsmen, outdoors people, soldiers; regular folks engaged in other activities: Anyone meeting the description above, **except** for stock imagery, of an office person looking at a laptop (gasp!), e.g. We're looking for uncommon ideas on this theme.

What do you look like when you're in action, focused on a creative, enlivening, engrossing but demanding task that takes mental (and possibly physical) energy to accomplish? We want you to capture that moment in others for us. Observers of the photos should want to know what the subject is doing, feeling, thinking....

Other Notes: Don't mistake this request for photos of angry people. :)

We'd like to purchase 4-5+ complementary images from the community for a Web site. We might also wish to use images on a printed business card and in sales collateral (Powerpoint slides).