I'll never forget a pilot I encountered only on a handful of occasions. His callsign was Yoda I believe. This particular fight happened years ago but, I was flying a P-51D and I merged with this 109K4 at 20,000 feet. We turned all the way down to deck, with both of us taking pieces of one another every so often. It was one of the longest white knuckled fights I've ever had, and I ended up stalling out at 50 feet and ditched. I haven't seen him in awhile, but he was always a fun fight.