Trivia: For one episode, the props guy spent ages building up the bottom of a frying pan with cotton wool and padding, then painting it black to look right. It was placed on a shelf just inside the kitchen door. Unfortunately, on the night, John Cleese reached around the door frame without looking and picked up the wrong frying pan. He then hit Andrew Sachs very hard over the head with it, almost knocking the poor man out.
Trivia: On the episode "Communication Problems", when Mrs Richards is in the staff office claiming that her money had been stolen, Basil wound her up by suddenly shouting at her. When she banged her head on the shelf, Basil bent down and said, "Is this a piece of your brain?" which is an iconic moment of that episode. However, John Cleese wasn't originally going to put that line in, and had it cut out because he "didn't like it". Andrew Sachs, however, told him to put it back in because he wouldn't regret it, and so he did. Sachs himself claimed on Fawlty Towers: Basil's Best Bits that it was his "one contribution to rescuing the script."
Trivia: In this episode, the jacket Andrew Sachs wears was treated with acid by the special effects department to look as if it was really on fire. Unfortunately it really did burn through to his skin and he still bears the scars today. Sachs was paid damages by the BBC.