As someone who used to work at a naked man magazine that used to run movie stills of naked Hollywood actors, I can attest that Eric Balfour (above, center) is one of the few men not afraid to drop trou for a camera. (You might say, "Eric who?" as did I before that gig. He's been in "24," "Six Feet Under," and here's his imdb page.)
Apparently, he'll drop his drawers (or overalls, as the case may unfortunately be) for any camera, even someone approaching him on the street, like photographer Thairin Smothers, as posted on World of Wonder.
The photos were taken in 1998, but Thairin didn't realize the model in the middle was known until his housemates recently recognized him in the prints.
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