Gary Hershberger
Gary Hershberger (born April 5, 1964) is an American actor and screenwriter. He is best known for his television roles as Mike Nelson in Twin Peaks (1989–1991; 2017) and Matthew Gilardi on Six Feet Under (2001–2002). Description above from the Wikipedia article Gary Hershberger, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Filmography
Grey's Anatomy
Columbo
JAG
The West Wing
Murder, She Wrote
Twin Peaks
Knight Rider
Chicago Hope
The O.C.
Six Feet Under
21 Jump Street
Coach
Pacific Blue
Renegade
Highway to Heaven
Tales from the Darkside
Big Love
Family Law
Martial Law
Sneakers
Twin Peaks: Fire Walk with Me
Twin Peaks
Twin Peaks: The Missing Pieces
Burglar
The Siege of Firebase Gloria
Faith, Hope & Love
Secrets from Another Place: Creating Twin Peaks
Terrorist on Trial: The United States vs. Salim Ajami
My Man Adam
Last Resort