He said that he came across that when making Fawlty Towers, so that was late in his career (the end of his career so far as I am concerned. He was speaking specifically about The Germans episode.
Then it would appear that this discovery, the influence of which you can arguably see in A Fish Called Wanda among other latter work, resulted in his career going to crap.
Then it would appear that this discovery, the influence of which you can arguably see in A Fish Called Wanda among other latter work, resulted in his career going to crap.