I saw "Fawlty Towers" for the first time when I was 14. I don't think I've ever laughed as much before or since.
In fact, the character of Basil Fawlty must be lodged in my brain from repeated viewings, as my own screenwriting creation Raymond Ledbetter seems to be his direct descendant. (That screenplay, The Death of Ledbetter, is in the process of being produced by a campus group.)
So here it is, probably my favorite episode.