CNN CNN Newsroom With Carol Costello May 21, 2015 14:21:00
It is the end of an era, david lettermanends his late night tv gig with one last good night. here is michaela pereira with more. >> 6,028 shows. he ran the numbers. he said it works out to about eight minutes of laughter. >> david letterman's final sendoff overnight full of the funny man's self-depprocating. presidents ushering him into retirement. >> letterman is retiring. >> he's just kidding, right? >> the late night legend walking on stage one last time to a fit
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