[Nobby]

I doubt anyone would think of Dad's Army or Porridge as 21st century sitcoms. The Porridge remake flopped and vanished without a trace.

Dad's Army was just a remake of the three lost episodes for Gold, not a full on reboot/remake, wouldn't be suprised if most people didn't even realise it had been made.

It all hinges on the definition of "21st Century Sitcom". I don't think my simple definition of a sitcom that was made in the 21st century is an unreasonable one. I wouldn't be surprised if there are people around your age (22 if my maths is correct) but with less of an interest in television than you or I who happened to see Porridge in 2016 and didn't know it was a remake.

Anyway, isn't that the whole point of a quiz show? To test knowledge of things that less than 100% of people would know? I wouldn't be surprised if most people didn't know about the New York subway system or amphibians of the British Isles but they are both specialist subjects in the current series of Mastermind. Should we allow ambiguous amphibious or substandard subway questions just because most people won't notice?