Howard Stern will appear on Monday's edition of "Late Show with David Letterman," which presents an opportunity a yup, admittedly an unexpected one a to discuss the next chapter in the life of one David Letterman.

As in: The future? What's next for a 68-year-old TV legend who still has energy, smarts, opinions and no discernible hobbies to keep him happily occupied as the golden years fly by...

How about another job, or more specifically, how about a radio show? Howard Stern a a guest of many years standing a has done OK with that newfangled medium called "satellite radio." Seems like Dave could find a niche there too, right?

This isn't idle speculation on my part for a change. Letterman's longtime colleagues have spoken of the possibility too (the boss has indicated in a few public comments that he might like to do something for CBS's "Sunday Morning" or even something online).

"We've talked about this" -- a possible radio gig -- "among ourselves," said Jerry Foley, "Late Show's" longtime and esteemed director in an interview Friday. "If you think about it, the show has become more about the desk more than anything else in the past couple of years. What happens at the desk puts him at the height of his powers, when he sits down and talks..."

Foley adds that Letterman enjoyed his "Comedians in Cars Getting Coffee" outing with Jerry Seinfeld, so the Internet beckons to some degree as well. But radio is especially intriguing; it's either long form or short-form, comedic or straight, about current affairs or the discussion of any type of affair, current or otherwise, you darn well choose to discuss.

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And Dave, as Dave-o-philes know, began his career on talk radio, WNTS/AM radio in Indianapolis, as both anchor and weatherman. Radio was the springboard to that which was to be a 33 years on network television. He congratulated tropical storms on becoming upgraded to hurricanes. He spoke of hailstones "the size of canned hams."

A future post-"Late Show" radio program would probably be a little different a still whimsical, but also presumably serious. It could also provide the foundation for a Letterman Unbound a a thoughtful guy with well-formed opinions about world affairs, politics and culture, says Foley.

Terrestrial radio or satellite? Guests or solo?

We're getting ahead of ourselves here, but satellite certainly sounds like fun, no? Guests, an absolute must. Maybe even...Stern.