Reply #1: I was featured in an episode of Unsolved Histories on Discovery Channel

[Schema Thing]

.....as a photographic expert. They had me recreate the shot that Mary Ann Moorman took just as the bullet struck JFK, and then interviewed me about what we might have seen with different film formats (answer: a hell of a lot, with 8X10 or 4x5 film; you could read hand writing on a sheet of paper taped to the fence line behind the grassy knoll).

It's been about six years, but just a month or so ago a waitress at a place I frequent said "hey, Mark, where you on TV the other night?". I'm always amazed, with all the channels to choose from, how many people who know me catch me on their television when these shows have run.

With all the reruns, it's probably added up to 15 minutes by now :)