The Brit-comedies that had me ROFLing:

Benny Hill

Mr. Bean

Fawlty Towers

Keeping Up Appearances

My Hero

Are You Being Served?

Open All Hours

Allo,Allo

A Thin Blue Line

Black Adder

The Young Ones

Father Ted

Monty Python's Flying Circus

Red Dwarf

The Mighty Boosh