The Huxtables: The 1st Black 1st Family?

This scene from the "Cosby Show" is rated as one of the best TV moments of all time. How much impact did the Huxtable Family have on the willingness of Americans to put a black family into the White House?

During the many years of its run as one of the most watched programs on television, race was never an issue nor was class. Never was heard a disparaging word, and not at any time did one of the Huxtable children come home and report that the "N" word had been uttered in their presence much less hurled at him or her in anger or as an act of hostility.
Are the Obamas an extension or product of the Huxtable fantasy? Has white America created or adopted a new myth regarding race relations?