I remember a screenshot here, I think it was by krigl, and he was going around an airport in a Spitfire (!!!) and suddenly a Seven Four Seven came in front of him

For myself, i've had a few accidents with traffic myself. Like that time I flew an Aloha Airlines 737 from Maui to Honolulu (well.. that was my planned route

), and as i'm on final, this stupid JAL 747-300 suddenly gets landing clearance on the same runway as me. So I thought, well, let's get out of the runway quick and it's fine.
Here's the problem: I was flying at 140 knots. He at 160. So when I was seconds from touchdown, he had already landed, and I got the message noone with 3 % of fuel left wants to get: "Aloha 1210, Go around."
So I went into the holding pattern. But they held me there for too long, and when I had 1 % of fuel left, I didn't care about the ATC messages telling me to do so, do that, and just landed on the paralell runway just as a Hawaiian 717 was about to start its takeoff roll. That was a fun adventure.
Cool shot BTW!