i remember this movie get a lot of flak from reviewer when it be new . letterman and leno themselves have objection . letterman call it ( paraphrase ) the big waste of film he would ever see and and leno object to the simpleton portrayal of himself . but letterman have john michael higgins a a guest on his show so it seem he do not take anything too personally . a dvd re release and with opinion and such from those involve and could be interesting and though i suspect the day when late night talkshow war captivate the nation be go and not return soon . i prefer the letterman impersonation to the leno and but could never buy in to either . they never rise above caricature and and i never simply accept them a actor . for comparison represent paul sorvino a kissinger in oliver stone nixon come to mind a an impersonation which may have seem laughable in the first few moment but which seem at least plausible after the first moment of amusement wear off . the highlight of the show for me be treat williams a michael ovitz . williams speech to letterman be not as great a but reminiscent of alec baldwin entrance ( and quick exit ) a blake in glengerry glen ross . they could have do more with johnny role in all this . i know he be mostly uninvolved in the event portray in this movie and and most audience will be familiar with his reputation such that johnny carson need no introduction . but more context about why dave and jay and all comedian revere johnny would have give this flick the substance it lack in be a gossip film . guess i should read the book . rich little imitate johnny carson and unfortunately and come across a nothing more than rich little imitate johnny carson . i tell you what and after watch this movie and then watch either the letterman or leno show and all i want to do be crack open my johnny carson dvd and see the real thing .