Non-Religious Irrational person
How about debating someone who holds a non-religious irrational belief, such as astrology, numerology, etc.?
Possible ideas: Sylvia Browne, One of those guys who can talk to dead people or the author(s) of "The Secret."
Matt Shizzle has been banned from the Rational Response Squad website. This event shall provide an atmosphere more conducive to social growth. - Majority of the mod team