I have had so many great moments, but I would have to say that dancing the Swan in 'Swan Lake' was such a unique and passionate experience for me. It was such bloody hard work, even at that very early age, that I would not want to try to replicate it again now.
I have my 1973 Citroen DS 23 Pallas. I drive it all the time. It's still the most beautiful shape in the world.