now and i be a bit biased and since i be a big fan of late night television . i have be a loyal fan of jay leno for about 6 or 7 year and and think he one of the funny and most talented comedian out there . and david letterman be one hell of a comedian a well and though i only watch his show ( unless jay a repeat ) during commercial or when he have a good guest than jay on the show . daniel roebuck and john michael higgins be both fine actor and they very much resemble jay and dave and but do they disappear into the character . nope . roebuck barely nails down jay voice and expression and mumbling at a high pitch and sound like a castrato marlon brando . higgins nail down david facial expression ( for example and his trademark squirm ) but he doesn not nail down dave voice . those who aren not big fan of late night tv might be a lot less bias . there a couple comedian who can do dead on impersonation of jay . why couldn not they have select one of them for the part . and the same go with dave . i would rather they have norm mcdonald play the part . norm doesn not look a hell of a lot like dave and but he do a great impersonation of him on snl . hey . you get any gum . that be so hilarious . however and i learn a lot about the late night war which i have very little knowledge of at first . i never watch the tonight show prior to when jay leno be host and so i do not know about the struggle to finally replace johnny carson and the countless negotiation that finally convince dave to move to cbs . i know very little about what happen behind the scene and find the film very enlighten . and kathy bates give a knockout performance a the foul mouth former executive producer of the tonight show . she basically steal the film . my score represent 7 ( out of 10 ) .