First, a confession: I'm Discovery Channel-challenged.

In fact, just about everything I know about the Discovery Channel and its many corporate siblings -- TLC, Discovery Health, Discovery Times, and, for all I know, Discoveries Faith, Hope and Charity -- I learned at press tour.

So while you may know all about Bruce Parry and his Discovery show, "Going Tribal," in which the former Royal Marines commander gets down and dirty with tribal cultures, I saw it for the first time this morning in a press-conference clip.

Seeing a largely clothed Parry cavort with a largely unclothed group of young men of the Nyangatom tribe of Ethiopia reminded me, a bit uncomfortably, of old issues of National Geographic -- you know, the ones that showed that not every culture considers the same parts private as we do.

So when a reporter asked Parry why he remained clothed, he said something to the effect that he didn't think an audience would want to look at him naked for an entire hour. (Bruce Parry, meet Richard Hatch.)

"I do end up going naked and hanging with them," he added. (Pause here for laughter.)

"So to speak."