I've had a personalized authentic from Jay Leno recently, using his show's email address.

I tried Conan via email as well, but never received anything, so I'm not sure if he's much of a signer.

As for requesting from the celebs that appear on these shows, I'm not sure. Perhaps they'll pass it on, but you'll have to get your timing spot on, especially if you're sending to the U.S from overseas.

Michelle

Late Night with Conan O'Brien
Late Show with David Letterman
Tonight Show with Jay Leno
etc etc etc

Has anyone tried to contact a celebrity while they where on a "late show", or any other talk show (Oprah, Ellen etc.)? and gotten a reply? Could it be worth a try? Do shows like these pass on Fanmail?

Any input would be appreciated.