Perhaps the funniest ever ?

The Two Ronnies and the irascible storekeeper in the ironmongery shop (translation DIY shop)

I can understand why that has been voted the favourite Two Ronnies sketch. I know what you mean John, it always cracks me up too. I think quite a few of their sketches fall into that category and I imagine they split tjeir sides with laughter as soon as the camera and mic were tunrd off.