Letterman celebrates 30 years in late-night TV

NEW YORK (AP)  David Letterman has marked three decades in late-night television with one of his favorite guests.

Letterman had Howard Stern on his CBS show on Wednesday. They congratulated each other on age improving their looks.

Then Letterman proved it by displaying a picture of them from when Stern first appeared on the then-NBC show in May 1984. Letterman had a bushy head of hair. Stern had a mustache.

Letterman says Stern's old picture "looks like a guy who was on to talk about a career of writing bad checks."

The "Late Show with David Letterman" airs weeknights at 11:35 p.m.