- Acting for Two: Ronnie Barker also voiced the judge in the intro.
- Actor-Shared Background: Mr. Mackay was in the Argyll and Sutherland Highlanders. In Real Life, Fulton Mackay was spent five years in the Black Watch in World War II that included a tour of India. He even based the character on a sergeant he knew.
- Author Existence Failure: Any plans for a second series of Going Straight were dashed when Richard Beckinsale prematurely died.
- The Character Died with Him: When the 2016 special aired, it's stated that Fletcher passed away in 2011, six years after Ronnie Barker died.
- Creator's Favorite Episode: The writers named "The Harder They Fall" as their favourite episode.
- The Danza: Averted by Fulton Mackay, who plays Mr. Mackay, as the character had already been named before he was cast.
- Dawson Casting: Fletcher was born, in his words, "two-two-thirty-two" - 2 February 1932. Ronnie Barker was born in 1929.
- I Am Not Spock: Peter Vaughan claimed that for years after the series ended, people would shout at him, "Let you out they, Grouty?"
- Old Shame: Barker later said his only regret about the series was performing the opening narration.
- The Other Darrin: As mentioned above, Ronnie Barker provides the voice of the judge in the opening narration. The said judge later appeared as a prisoner himself, and was played by Maurice Denholm. Barker's narration was retained, though, so we effectively had both Darrins at once.
- Unintentional Period Piece: Porridge holds up better than most 1970s sitcoms as it is mainly set in a prison, though Fletcher purchasing a pint of beer and six packets of crisps for a pound (in "A Day Out") stands out. Nowadays there wouldn't be much change from £10.
Trivia / Porridge