The IT Crowd - a pair of socially awkward geeks get a new manager who knows nothing about computers (some familiar) and spends her time dreaming about shoes. Written by Graham Linehan of "Father Ted" fame.
Bottom - another pair of socially awkward guys. The humour can be a bit lavatorial at times, but the cartoon level of violence is amazing. Where else can someone have their legs cut off with a chainsaw, not bleed to death, and then go for a (shaky) walk on them a few minutes later after they've been sewn back on?
Teachers - a bunch of High School teachers that behave worst than their students. Smoking in the toilets, being late for class, getting drunk on school nights, fighting and playing pranks with each other. All set to a new-age rock soundtrack so good, I had to make a "teachers" compilation CD.
Rab C Nesbitt - a drunk Scotsman with an insightful social commentary. He and his mates live for a "swally" at their local watering hole, stop off at the chip shop for a midnight snack, only to return home to find their wife waiting for them with a rolling pin.
Steptoe and Son - the idea for Sanford and Son, this show follows two rag-and-bone men (junk collectors). The episode where the son buys a snooker (billiard) table that take up the whole front room is priceless.