"Michael Feldman's Whad'Ya Know?" is a two-hour comedy/quiz/interview show distributed by PRI, Public Radio International. Regular elements of every program include a "Whad'Ya Know?" Quiz in each hour, Feldman's foray into the live studio audience to chat with fans, jazz with John Thulin and the "Whad'Ya Know?" Band. During the hourly Quiz, host and quiz-master Michael Feldman invites callers and audience members to test their knowledge from five categories drawn from Feldman's seemingly limitless store of insignificant (but also somehow, important) information.