Cher, David Letterman together again

Cher and David Letterman go way back -- nearly 30 years. She's been on "Late Night" and "Late Show" numerous times, although -- famously/infamously -- during their first encounter, she called him something. (Clip below.) She is back again tonight.

Clearly, Dave cares for Cher, and I almost think Cher cares for Dave. Here's tonight's opening moment -- followed by an encounter from many years ago.

(There have been at least a dozen other appearances over the years, including with Sonny.) Cher's a busy lady: She's got a new album and she's a mentor on "The Voice" this season. (Newsday app reader, check out the videos at Newsday.com/tvzone)