I once got a ticket for not coming to a complete stop, at a 4 way stop, on my bicycle... it was at the base of a hill that I was going to go up. I had slowed down to about walking speed and saw the cop (who was the only car around and parked about 50 yards away). I could see ticketing cyclists blasting down the hill... actually think that was why he was there.
Oh well, went to court to make sure it wouldn't affect my car insurance.