Ian McDiarmid is a Scottish actor and director best known for portraying Emperor Palpatine in the Star Wars film series. He has received an Olivier Award for Best Actor and a Tony Award for Best Featured Actor in a Play for his performances. Wikipedia
Star Wars Rebels: The Siege of Lothal
As Emperor Palpatine (voice)
Dirty Rotten Scoundrels
As Arthur
Dragonslayer
As Brother Jacopus
Return of the Jedi
As The Emperor
Star Wars: Episode I - The Phantom Menace
As Senator Palpatine
Star Wars: Episode II - Attack of the Clones
As Chancellor Palpatine
Star Wars: Episode III - Revenge of the Sith
As Chancellor Palpatine / Darth Sidious
Sleepy Hollow
As Dr. Lancaster
Macbeth
As The Porter / Ross
The Awakening
As Dr. Richter
Star Wars: A Musical Journey
As Host
Crime and Punishment
As Porfiry
Obi-Wan Kenobi: A Jedi's Return
As Self - Emperor Palpatine
Annie: A Royal Adventure
As Dr. Eli Eon
The Odds
All the King's Men
As Rev. Pierrepoint Edwards
Margaret
As Denis Thatcher
Last Night Another Dissident...
As Fedka
Richard's Things
As Burglar
Our Hidden Lives
As B. Charles
The Likely Lads
As Vicar
Star Wars: Evolution of the Lightsaber Duel
As Self
Star Wars: Greatest Moments
As Self
The Beginning: Making 'Episode I'
As Self
Hillsborough
As Doctor Popper, Coroner
Restoration
As Ambrose
The Blackened Mantle
As Chancellor Palpatine
Great Expectations
As Jaggers
Sir Henry at Rawlinson End
As Reg Smeeton
The Story of Star Wars
As Palpatine/The Emperor (archive footage)
The Lost City of Z
As Sir George Goldie
Chernobyl: The Final Warning
As Dr. Vatisenko
The Adventures of Young Indiana Jones: Demons of Deception
As Prof. Levi
Amazing Stories
As Blade
Star Wars: The Rise of Skywalker
As Emperor Palpatine
Gorky Park
As Prof. Andreev
Sleepy Hollow: Behind the Legend
As Self
The Skywalker Legacy
As Self
Heart of Darkness
As Doctor
Inspector Morse
As Hugo De Vries
Spooks
As Prof. Fred Roberts
Star Wars: The Bad Batch
As Darth Sidious / Emperor Palpatine (voice)
City of Vice
As Henry Fielding
Charles II: The Power and The Passion
As Sir Edward Hyde
37 Days
As Sir Edward Grey
Elizabeth I
As Lord Burghley
Britannia
As King Pellenor
The Nation's Health
As Dr Vernon Davis
Karaoke
As Oliver Morse
Star Wars Rebels
As Emperor Palpatine
Utopia
As Anton
Obi-Wan Kenobi
As Emperor Palpatine / Darth Sidious
Star Wars: The Clone Wars
As Darth Sidious (voice) (archive sound)
Star Wars: Tales of the Jedi
As Darth Sidious (voice)
The Adventures of Young Indiana Jones
As Professor Jacques Levi
Crime and Punishment
As Porfiry
The Modern World: Ten Great Writers
As Dostoevsky
The Professionals
As Mickey Hamilton