In the days before video was widely available, one relied on occasional repeats, but mainly on many conversations with one's friends discussing and reminiscing about great TV. The Fawlty Towers episode where the Germans visit was an instant classic - I remember as a boy at the first broadcast being in helpless hysterics. Thereafter one relied on memory - "do you remember the one with the Germans?"
Only with the advent of video and DVD technology could we properly appreciate that not just one, but three classic Fawlty Towers sequences are crammed into these 30 minutes. This is the episode that also contains the moose, and the fire drill - each of which would have supported a perfectly good half-hour sitcom in its own right. But these were not three separate shows, as imperfect memory suggested; they were woven together to create a perfect piece of comedy, a fugue of chaos as Basil struggles to cope with Sybil's absence (and attempts to micromanage from her hospital bed). Several deathless scenes - Basil's sympathising with Sybil's ingrown toenail, the Major's conversation with the moose, Basil's frustration with the guests assembled in the foyer for the fire drill, and then of course the beautifully timed and choreographed dinner with the Germans, with its sublime climax - will remain absolute classics.