I think it really picked up with series 3 when Foggy joined the show. I've seen most of the episodes up until the series where Compo dies, and I've found them all funny. The couple of episodes that I've seen that took place later were good, but different. After seeing so many episodes with Cleggy and Compo it seemed jarring to only have Clegg left from the original trio; I was used to the third man changing but those two were always the constant that everything else in the show revolved around.