In reply to Choss:
I always think of Dad's Army as a series of diametrical pairs, often with Mainwaring as one of the pair. Thus
Proper Army vs Dad's Army - Square vs Mainwaring
Counter-jumper vs gentleman - Mainwaring vs Wilson
Military vs Civil Authority - Mainwaring vs Hodges
Bluster vs quiet stoicism - Mainwaring vs Godfrey/wilson
Misplaced confidence vs naive idiocy - Mainwaring vs Pike
and others
England vs Scotland - Jones vs Frazer
England vs Wales - Jones vs Cheeseman
Naive vs spiv - Pike vs Walker
and so on with virtually every permutation of the cast.
Coupling is a twist on the rule of four. In Coupling you have three male characters vs "the girls" or three female characters vs "the guys". In each point of view the other gender is viewed stereotypically, reducing them to a single characterization. Not sure it counts as comedy though.