I agree about Father Ted but I'm glad it didn't continue as it wouldn't have been the same without Dermot Morgan.
Keeping Up Appearances should have had atleast one more series to draw a close. I know Patricia Routledge wanted to move on but just think what Series 6 would have been like. Perhaps do a little closure like have Hyacinth finally accepting her family. But Series 5 had great episodes for the show to bow out on.
I think there was a planned episode called "The Bishop Affair" but nothing come of it. Did anyone hear about that?