I was fishing a small stream with many small beaver dams and associated pools, As I wriggled through the willows I came upon a nice pool where what looked like small golden crane flies were fluttering above the water apparently egg laying. I watched for about 30 minutes as small brook trout would leap out of the water to grab them, very much like in the video except a few actually launched completely out of the water and caught them on the down side of the arc. I was so amazed that I watched til it got dark without casting a line. It will remain one of my most cherished moments in fly fishing.
