Mitchell Arthur Edgar Kosterman (b. February 4, 1958 in Vancouver, British Columbia) is a Canadian actor perhaps best known for his portrayal of Sheriff Ethan Miller on the series Smallville. Kosterman is known for playing police and military characters. Born and raised in Vancouver he has guest starred on several Vanvouver-based television series and films.

Genre Credits

* The Trial of the Incredible Hulk (1989)
* Highlander: The Series

"The Return of Amanda" (1993)

* M.A.N.T.I.S. (1994)
* Strange Luck (1995)

"Over Exposure" (1995)

* The Outer Limits

"Virtual Future"
"Unnatural Selection"

* Sliders

"Gillian of the Spirits"

* The Sentinel

"Out of the Past"

* Viper

"Wheelman"

* Beyond Belief: Fact or Fiction

"Above the Clouds"

* The X-Files (1994-1998)
* The Crow: Stairway to Heaven

"Get a Life"

* First Wave

"Lungfish"

* Millennium

"Force Majeure"
"The Beginning and the End"

"Skull and Bones"

* Max Q (1998)
* Seven Days (2000)

"Mr. Donovan's Neighborhood"

* Dean Koontz's Sole Survivor (2000)
* The Lone Gunmen

"Three Men and a Smoking Diaper" (2001)

* Wolf Lake

"Soup to Nuts"

* Dark Angel

"Dawg Day Afternoon"

* Shadow Realm (2002)
* The Dead Zone

"The Siege"

* Smallville (2001 - 2003)
* John Doe

"Remote Control"

* Stargate SG-1

"Seth"
"Heroes, Part 1"
"Heroes, Part 2"