When watching a film or a TV show, it usually takes me only a few seconds to decide whether or not it's going to be any good. I've lost count of the number of films and TV shows I've rejected in that way and it's exceedingly rare for me to give a doubtful show a chance and be glad I did so.
Having said that, I have made two spectacular errors of judgement by rushing to judgement in such a way.
The first was 'The Blues Brothers' which I initially rejected as a load of bollocks after watching only the first couple of minutes, only to give it another chance years later and discover that it's one of the funniest films ever made.
The other is the sitcom 'Spaced' which I initially rejected as a load of bollocks after watching only the first couple of minutes, only to give it another chance this very week and discover it's an excellent sitcom, years and years ahead of its time.
It all goes to show, one is never too old to learn.