I used to like him when Minder was on.
Then I watched him and Rula Lenska when they appeared on "Wogan" once in the 1980s.
For the duration of this particular show there were puzzles left on the table, like those two parts you can't get to come apart easily, that sort of thing (as a kind of talking point I guess.)
While Waterman was talking to Wogan, Rula Lenska picked one up, and started to examine it. He stopped what he was saying and said "Do you MIND. I am talking," as though she was being rude, and I guess if you were fussy/sensitive you could say that was a bit rude, but you'd never call someone on it in public, would you, and certainly not on live TV?
She apologised humbly and put it down.
A couple of minutes later she was answering a question. Waterman picked up the puzzle. She did not pull him up in the same way, just carried on talking to Wogan. A minute later, while she was still talking, he loudly shouted out "DONE IT!!" brandishing the solved puzzle in triumph, totally interrupting - and ruining - what she was saying.
I was only in my 20s and knew nothing about abusive, controlling, nasty men. But I have detested him ever since.