Thomas F. Wilson

Thomas Francis "Tom" Wilson Jr. (born April 15, 1959) is an American actor, writer, singer, musician, painter, voice-over artist, comedian, and podcaster. He is known for his voice-over work in video games, movies and TV shows. He is also known for playing 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.