Inside David Letterman's Retirement Announcement Show: 'It's a Madhouse'

David Letterman said Thursday that he will leave his longtime late-night perch hosting of "Late Show" on CBS next year after his current contract expires.

End of an era: David Letterman, the longest-serving late-night host in TV history, announced he's retiring next year. The iconic CBS host revealed the news during the taping of his Late Show on Thursday. He said he informed 

David Letterman, the longest-serving late-night talk show host in TV history, has just announced his retirement.Letterman made the announcement during the…

Less than two months after his longtime rival Jay Leno stepped down from NBC's "Tonight Show," David Letterman has announced he'll retire and step down from CBS's "Late Show" in 2015. Letterman addressed the "Late Show" audience at Thursday's 

End of an era: David Letterman, the longest-serving late-night host in TV history, announced he's retiring next year. The iconic CBS host revealed the news during the taping of his Late Show on Thursday. He said he informed