My favourite moment was on the York to Selby path. At one point it passes a pub and cafe or knick-knack shop of some sort. Cubester and I were on our way back, keeping to the left like everyone else was that day, except for the woman cycling towards us. She chose to ride alongside her partner, thereby taking up all of the path between them. She was absorbed in reading the sign outside the cafe, head turned to her right, oblivious of our approach. I called out a cheerful "heads up!" which she possibly didn't hear, and now our collision was almost inevitable. I braked hard, as did the following Cubester, and I shouted again, "Heads Up!" from about ten yards max. She looked up, swerved, stopped, and gave me such a mouthful for "bombing along the path at that sort of speed".
Fortunately Cubester's presence prevented me from forgetting my manners, and as I had seen a woman watching her from the frontage of the cafe, who by this time was shaking her head despairingly (thus handing my exasperated ego a moral advantage) I decided trying to educate the silly cow by swearing at her would be futile.