Stephen Root

 (born November 17, 1951) is an American actor and voice actor. He is best known for his comedic work as Jimmy James on the TV sitcom NewsRadio, as Milton Waddams in the film Office Space and as the voices of Bill Dauterive and Buck Strickland in the animated series King of the Hill. He has also won acclaim for his occasional dramatic and comedic roles, such as that of Captain K'Vada in the Star Trek: The Next Generation feature-length episode "Unification", and as Gordon Pibb in DodgeBall: A True Underdog Story. Among his other known roles include the voice of Bubbles in Finding Nemo, Dwight Dixon in Pushing Daisies, and Bud Gleeful, the father of antagonist Gideon Gleeful, in Gravity Falls (who sounds similar to Bill from KOTH). He will provide the voice of Floyd in "Doof 101".