Mitchell Craig "Mitch" Pileggi (born April 5, 1952) is an American actor. Pileggi is known for playing FBI assistant director Walter Skinner on the long-running popular series The X-Files. He also had a recurring role on Stargate Atlantis as Col. Steven Caldwell. He appeared in the 2008 film, Flash of Genius.
Basic Instinct
As Internal Affairs Investigator
The X Files
As Assistant Director Walter Skinner
Return of the Living Dead Part II
As Sarge
The X Files: I Want to Believe
As Walter Skinner
Shocker
As Horace Pinker
Three O'Clock High
As Duke Herman
Recount
As Bill Daley
Man in the Chair
As Floyd
Death Wish 4: The Crackdown
As Lab Foreman
Woodshop
As Miller
First to Die
As Warren Jacobi
Legion of Fire: Killer Ants
As Police Chief Jeff Croy
Mega Cyclone
As Gunter MacGregor
Desert Shadows
As Professor Charles M. Ridley
On the Line
As Stephens
Conspiracy Theory: Did We Land on the Moon?
As Narrator
Mongrel
As Woody
Inside The X-Files
As Self
Flash of Genius
As Macklin Tyler
Knight Rider 2000
As Thomas J. Watts
Trouble Shooters: Trapped Beneath the Earth
As Thompson
U.S. Marshals: Waco & Rhinehart
As Gate AP
Dalton: Code of Vengeance II
As Verbeck
Raven Hawk
As Carl Rikker
The Girl in the Photographs
As Sheriff Porter
Gun Shy
As Dexter Helvenshaw
Dangerous Touch
As Vince
Transformers: The Last Knight
As TRF Group Leader
3 On a Match
As Bull Tully
Night Visions
As Captain Keller
Polaroid
As Sheriff Thomas Pembroke
Brothers in Arms
As Caleb
Xtra Credit
As John Weller
Guilty As Charged
As Dominique
Vampire in Brooklyn
As Tony the Hitman
American Traitor: The Trial of Axis Sally
As John Kelly
Stargate Atlantis: Fans' Choice
As Steven Caldwell
Medium
As Dan Burroughs
That '70s Show
As Bull
Falcon Crest
As Saunder's Henchman
Batman Beyond
As Dr. Stanton (voice)
Sons of Anarchy
As Ernest Darby
Castle
As Hans Brauer
Brothers and Sisters
As Browne Carter
CSI: Crime Scene Investigation
As Happy Harry Desmond
The A-Team
As Paul Winkle
Supernatural
As Samuel Campbell
Tarzan
As Richard Clayton
The Batman
As Commissioner Gordon (voice)
Nip/Tuck
Law & Order: Special Victims Unit
As Jack Hammond
Walker
As Bonham Walker
The X-Files
As Walter Skinner
Alien Nation
The Lone Gunmen
As Walter Skinner
Breaking the Magician's Code: Magic's Biggest Secrets Finally Revealed
As Narrator (voice)
Reaper
ER
As Terry Waters
Boston Legal
As U.S. Attorney Mark Freestone
In Plain Sight
Dallas
As Morrisey
The Mountain
As Colin Dowling
Dallas
As Harris Ryland
Birds of Prey
As Al Hawke
Stargate Atlantis
As Steven Caldwell
The West Wing
As Senator Dresden
The Rookie
As Rex
Grey's Anatomy
As Lawrence Jennings
Against the Wall
As Randall
The Finder
As Eddie Ross
Roc
As White Officer
Day Break
As Detective Spivak
American Horror Story
As Art
Supergirl
As Rama Khan
Leverage
As Colin Saunders
Helstrom
As Papa
NCIS
As Wynn Crawford