Godfrey, Laurence - British particle physicist with a penchant for threatening to sue, and suing, Web sites and ISPs for libel and defamation.
Harris, James Steven - Continually posted seriously flawed proofs for Fermat's Last Theorem to sci.math.
Nolst Trenite, Koos - Ex member of the C.o.S whose posts to alt.religion.scientology purported to be transcripts of auditing sessions conducted by Koos on various celebrities and Scientology officials. Winner of the Usenet Kook of the Month Award for February 1995.