10) Leslie Schofield
Leslie Schofield has an impressive number of films and TV shows to his credit, including long-running roles in EastEnders and Jonny Briggs.
In the 1977 Tom Baker story The Face Of Evil, Schofield is credited as Calib. He can be seen in the background in this clip while Tom Baker is… um… being Tom Baker.
Schofield portrayed Chief Bast in A New Hope. He had a few short scenes interacting with Vader and Tarkin, but the most famous is this one where he asks Tarkin if he wants to evacuate the Death Star.