I think most of the real classic comedies have been mentioned. If you like to learn and laugh I would push QI as well, and Horrible Histories is very funny, even if it is officially for children.
Heretic!.
Tinker Tailor and Smiley’s People are 24 carat gold classics.
Personally I enjoyed both.
And in that vein, we cannot leave out another classic: Callan. Fantastic series.
I loved HH doing Dickens in the style of Morrissey and Smiths.
Matthew Baynton wandering about 1860’s London swinging a gladioli.