Gliding
I fancied learning how to fly a glider, and so booked myself into a school in the UK Midlands, where I discovered I was not a natural born pilot - I was excellent at finding sink. So it goes. On the same course was a 747 pilot, and in the general discussions about our performance with the instructors, it was pointed out that he tended to flare for landing rather too early. He pointed out that he was used to sitting rather higher off the ground, and he had a natural tendency to flare at the time he was habituated to!
That said, I've had it pointed out by several pilots that they enjoyed flying gliders (perhaps it helps to keep manual flying skills current?), and it probably helped that the pilot of the 'Gimli Glider' was an experienced glider pilot.