Ah yes, forgive me for completing forgetting Canadian humor from the OP, but that's another interesting angle for this discussion. I've seen a few episodes of Trailer Park Boys, but that is about the extent of my knowledge. Maybe you could elaborate a bit on differences you have seen between the three countries?

And I'm with you in terms of 70's and 80's as far as British television goes. I enjoy Fawlty Towers and Blackadder a lot more than anything more recent that I have seen from across the pond. Maybe I'm just watching the wrong shows?