Only just seen this thread, as people are responding to it again.
I'm not sure I have ever seen a full episode of any of the ones listed here.
I've seen a couple of part episodes of Men Behaving Badly, and loathed it. I saw a few bits of On The Buses when I was a teenager, and it just left me cold. The rest of them I haven't even seen parts of episodes.
Another one which seems to be getting a lot of loathing here though is Gavin & Stacey. I can't say it ranks among my favourites, but it is OK, and many millions of people (including my wife) love it.
If so many people laugh at it and enjoy it, then it really can't be bad.