pressure cooker. >> one of the biggest challenges johnny carson had was doing a comedy show in a time where the culture was changing. he had to walk this fine line between keeping his older, more traditional audience members happy and at the same time constantly trying to keep that show relevant and enough to seem like they're not completely out of touch with reality. >> we're going to show you, mrs. hodgkiss, that even from a distance of 50 feet you will be able to tell the bleer wash. may we have the two washes, please? mrs. hodgkiss, if you'll just look over here. now, mrs. hodgkiss, we have two grand kleagles here from the klan. >> carson was sort of an equal opportunity light jab guy. >> i think grand kleagle a. >> you say grand kleagle a looks the whitest. grand kleagle a, are you the whitest?