Star Wars

I read that the chair was originally supposed to have a motor in it to make it turn dramatically when the Emperor made his reveal to Luke and Vader. But the motor malfunctioned so they had Ian McDiarmid manually turn the chair by shuffleshuffleshuffling his feet on the floor with the movement hidden under his Emperor robes.

Much like the story of how Peter Cushing couldn't stand wearing the boots that were part of Grand Moff Tarkin's costume and so wore slippers instead whenever his feet were below the camera's frame (basically all of his scenes), it kind of takes away just a touch of the gravitas of the Empire knowing that.