I never watched it properly but when I did there were always some great lines in it. The recent special where they were talking about Terry Waite:
Jim: "Who famously said 'I want to be alone'?"
Barbara: "...Is it Terry Waite?"
Jim: "Terry Waite was that poor sod held captive for five years tied to a radiator!"
Barbara: "Well at least he was warm."...
Dave: "You know Jim, at times like this I can't help thinking about Terry Waite chained to the radiator."
Jim: "Yeah Dave, farting away and no one there to smell it."
Dave: "Makes you realise how lucky we are."