- Was only the second person ever studied for the syndrome dubbed "hyperthymesia" (meaning "superior memory") by neurology researchers at the University of California - Irvine.
- Brother of Eric Williams.
- Won the Wisconsin state spelling bee in 1969 at the age of 12, advancing to the national contest in Washington D.C., and has served as pronouncer for the Wisconsin bee since 1978.
- Was a contestant on the quiz show "Jeopardy! " in 1990.
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