Gourmet Night (a.k.a. Gourmet's Paradise) - S1-E5
Factual error: Just before the 'thrashing' scene, the road Basil wants to drive along is called Mentmore Close. In Britain, streets called "Close" are usually dead ends to traffic.
Fawlty Towers (1975)
1 factual error
Starring: John Cleese, Connie Booth, Andrew Sachs, Prunella Scales
Genres: Comedy
Visible crew/equipment: At the end of the episode where everyone is cleaning up, there is a shadow of the boom mic on the wall. (00:29:05)
The Wedding Party (a.k.a. Sex) - S1-E3
Basil: Did you ever see that film, "How To Murder Your Wife"?
Major Gowen: How To Murder Your Wife"?
Basil: Yes, awfully good. I saw it six times.
Basil the Rat (a.k.a. Rats) - S2-E6
Trivia: Melody Lang, who plays Mrs. Taylor in this episode, is Andrew Sachs' wife.
Communication Problems (a.k.a. Theft) - S2-E1
Question: What's the name of the piece of music played when Basil turns up the radio after Mrs Richards says it (the radio) doesn't work?
Answer: It's "Leisure Complex" by Dave Gold and Gordon Rees. Can be found on YouTube. The relevant clip is around 25 seconds in.