Thomas F. Wilson

Thomas Francis "Tom" Wilson Jr. (born April 15, 1959) is an American actor, writer, musician, painter, voice-over artist, comedian, and podcaster. He played Biff Tannen, Griff Tannen and Buford "Mad Dog" Tannen in the "Back to the Future" trilogy, and Coach Ben Fredricks on NBC's "Freaks and Geeks".