My scorecard reads one miss and one hit.
The hit was annoying and avoidable. I was coming in to land at Brisbane (YBBN) and could see an aircraft lining up for departure. The departing aircraft started its roll just before I crossed the runway threshold. By this time I had already nosed up and started to initiate a go-around. Before I could gain enough speed to climb and turn, the departing aircraft took off and slammed into the underside of my aircraft
For the near-miss, I was flying a Rome-London flight in a BA B763 when I had a traffic warning of an MD11 at my 2 o'clock. I was up around the North-west coast of Italy sitting on FL350, the same flight level the other traffic was at. I had a look around and saw nothing, so kept heading on my course. The next thing I know a flash goes past the window so close that I nearly fell off my chair. At the same time ATC gave me a "TRAFFIC ALERT" for an aircraft less than one mile. Unfortunately I couldn't find the response "no sh*t Sherlock!!" in my ATC box
It amazes me that with all that sky, the number of times you come close to other aircraft.