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
Martial Law
JAG
Columbo
The West Wing
Murder, She Wrote
Twin Peaks
Chicago Hope
Knight Rider
The O.C.
21 Jump Street
Renegade
Coach
Big Love
Six Feet Under
Highway to Heaven
Pacific Blue
Tales from the Darkside
Family Law
Sneakers
Twin Peaks: Fire Walk with Me
Twin Peaks
Burglar
Twin Peaks: The Missing Pieces
Into the Homeland
Magic Max
Forever Love
Faith, Hope & Love
Terrorist on Trial: The United States vs. Salim Ajami
The Siege of Firebase Gloria