Michael Sheard's side hustle was playing Adolf Hitler:
Secret History
Indiana Jones and the Last Crusade
The Dirty Dozen: Next Mission
The Tomorrow People
Rogue Male
Same with Jeannette Charles, who was the go-to for Queen Elizabeth II (but this was her main hustle):
Write the Future
Big Brother's Little Brother
The Slammer
Austin Powers in Goldmember
World of Pub
The Parent Trap
Shining Time Station: Queen for a Day
Tatort
Day by Day
Carrott Confidential
The Naked Gun: From the Files of Police Squad!
The Sooty Show
Nipagesh Bachof
The Big Gag
Dolly
If It's Tuesday, It Still Must Be Belgium
Ratman
Tickets for the Titanic
First Among Equals
National Lampoon's European Vacation
Erinnerungen werden wach: Inge Meysel
On Safari
The Queen Special
Not the Nine O'Clock News
Q5
The Goodies
Da kommt was auf uns zu
The Rutles: All You Need Is Cash
Queen Kong
Am laufenden Band
Born Erect
Loriots Telecabinet