Question: What American-Canadian conservative political commentator, actor, and comedian that played the voice of Brain, in the 6th season of the television show "Arthur", originally broadcast on PBS?
Sentence (from "Arthur (season 9)"): The 9th season of the television series "Arthur" was originally broadcast on PBS in the United States from December 20, 2004 to April 8, 2005 and contains 10 episodes.
Relevant evidence: No