I beg to disagree.Walter Williams can be funny but his brilliance should not be confused with a comedian. Walter uses his keen wit to point out the flaws and absurd positions often expoused by the (sometimes liberal) nutcases. The primary purpose of his humor is to make people think. The laughter comes as Walter uses humor to reinforce his points, and I don't recall ever laughing once he had presented his arguement.
By comparison, Eddie Murphy is a funny comedian, Bill Cosby is a comedian, Whoopie Goldberg is a ..commie..well, you get my point.