David Letterman is to be interviewed for an upcoming special of The Howard Stern Show on Sirius radio. This is very rare – Dave rarely gives interviews and isn’t usually seen out and about on other shows other than the Late Show. Although, Dave has been a guest on The Oprah Winfrey Show this year, and has also dropped in on Regis Philbin on Live With Regis And Kelly following Regis’ recovery from heart bypass surgery (something Letterman went through himself a few years ago). The Howard Stern Show special will be a life story of Howard Stern’s career. The New York Post website says the first part of the special radio programme will air on the 17th December “on one of Stern’s two Sirius radio channels”. The New York Post reveals the radio special “is expected to feature interviews with a slew of Stern regulars and celebrity friends. Among them is Letterman, who, outside of his own show, rarely grants interviews”. Letterman used to be quite a regular guest on Howard’s various radio shows, and Stern has appeared on the Late Show many times in recent years.