Comedy is so subjective, all depends how slapstick, crude clever or dark you like it.

I used to love watching Harold Lloyd and Laurel & hardy but didn't care much for Charlie Chaplin. There are some comedies that really struck a chord with just about everyone, most of which have already been mentioned on this thread i.e. Fawlty Towers, Porridge, Fools and Horses, Phoenix Nights, League of Gentlemen, The Office etc. More recently I would say Friday Night Dinner, Man Down, Game face and This Country are very funny.

Some great Irish comedies out there of course with Father Ted leading the way, more recently Derry Girls and Bridget and Eamon both worth a watch.

Always been a big fan of sketch shows so The Fast Show and Smack the Pony are particular favourites.

Have to agree with Sid though regarding that Mr Browns Boys, absolute garbage, sorry, can't stand it.