My favourites;
British 70s/80s/90s: Only Fools and Horses, Keeping Up Appearances, Blackadder, Hi-De-Hi, The League of Gentleman, Alan Partridge/Coogan stuff from this era, Father Ted, Absolutely Fabulous, The Vicar of Dibley, Dad's Army, Dinnerladies, One Foot in the Grave
British 00s onwards: Black Books, Garth Marenghi's Dark Place, The IT Crowd, Phoenix Nights, The Book Group, Man Down, Ideal, Nighty Night, Jam and Jerusalem, Toast of London, Upstart Crow, Siblings, Uncle, The Inbetweeners
US: Frasier
Australian: Kath and Kim
This is all I can think of right now.