I was riding in stop-and-go traffic a couple of years ago and was signalling stop every time I stopped even though each advance was only about 15 feet or so. I wasn't really doing it consciously, it's just automatic by now. Once I got through the traffic obstruction the driver who had been directly behind me moved into the lane to my left and at the next stop light said "Great signalling!" and gave me a thumbs up. I was so surprised I didn't know what to say to her and just said "Thanks". It really made my day. Of course it's only happened once.