Well here goes one of mine.
It all started innocently enough. I was scheduled to fly a bunch of boxes of material to a project in Susanville, Ca. The old 206 saying is " if it'll fit through the doors you can fly with it" . Well this stuff was pretty heavy and there was a lot of it. To the point I had to remove all the aft seats to get it all in. In addition I had one passenger (to help unload on the other end) We departed with about 1/2 fuel on board for the 1 hour flight. The take off run was really nothing special although I did let her stay in ground effect to build a bit o' speed before climbing out. Thank goodness for those 315 turbocharged ponies. Had to dial in a little more nose down trim than normal so I knew we were pretty far aft on CG. Upon arrival at Susanville, I got the plane configured for landing and noticed that I still had the yoke pushing even with full nose down trim. Adding another 10 kts to my approach speed, we made a successful landing. Taxied to our usual spot and hopped out to push her back and tie her down. Shortly after my feet hit the ground and much to my surprise, she sat right down on her tail. It took me on the tail cone and my passenger hanging on the prop to get her pushed back. In retrospect I really should have done a W/B and figured out how heavy and outta' CG the load actually was. I also should have taken into account the fuel burn and how that would effect the CG at arrival. Just by luck and with a lot of time in the 206 did I feel the problem and add the margin needed for successful landing. I can't even imagine the stall, that most certainly would have been unrecoverable, had I been too slow during that approach. It was my wake up call to W/B calcs. especially now that I fly lesser powered birds.
So come on now, I know there are other stories out there. Let's hear 'em...