never been done whilst riding (touch wood) and thats 4 times in 15 years
but the best one was i was late for work and booted it up a hill and over the crest were the cops. i almost hit one as he stepped out to pull me over and a motorbike cop chased me down. i didn't even try to run though. that was 95 in a 60 zone 4 points off my licence (12 points in total) and $500 in fines
have been chased by cops just to see what was under my bonnet though. that was interesting