Fawlty Towers (1975)

The Builders - S1-E2

Deliberate mistake: When Basil is arguing with Polly and eventually decides to call O'Reilly, he trips over the gnome. However when we see Basil come out from behind the desk, he takes the gnome out of a side gap in the desk, perfectly out of reach of Basil tripping over it. (00:14:30)

Communication Problems (a.k.a. Theft) - S2-E1

Mrs Richards: And another thing. I expect to be able to see the sea.
Basil: [whispering to Manuel.] Deaf, Mad and Blind. [To Mrs Richards.] Yes, this is the view as far as I can remember... Yes, yes it is.
Mrs Richards: When I pay for a view, I expect something more interesting than that.
Basil: But that is Torquay, madam.
Mrs Richards: Well it's not good enough.
Basil: Well may I ask what you expected to see out of a Torquay hotel bedroom window? Sydney Opera House perhaps? The Hanging Gardens of Babylon? Herds of wildebeest sweeping majestically across the plain...
Mrs Richards: [interrupting.] Don't be silly. I expect to be able to see the sea.
Basil: You CAN see the sea! It's over there between the land and the sky!
Mrs Richards: I'd need a telescope to see that.
Basil: Well might I suggest you move to a hotel closer to the sea. Or preferably in it.
Mrs Richards: Now listen to me. I'm not satisified but I've decided to stay. HOWEVER, I shall expect a deduction.
Basil: Why, because Krakatoa isn't erupting at the moment?
Mrs Richards: Because the room is cold, the bath is too small, the view is invisible and the radio doesn't work.
Basil: No, the radio works. You don't.

Basil the Rat (a.k.a. Rats) - S2-E6

Trivia: Melody Lang, who plays Mrs. Taylor in this episode, is Andrew Sachs' wife.