Brendan O'Brien and John Taylor when they first started the RF-4 displays with music.
It was just so different from the repetitive fly-bys of the jet jocks.
But my vote is for sheer beauty, Pete Kynsey aerobatting the Jungmann at Headcorn, '91ish. There may have been a fly-in or it may have been an ordinary sunday but it just captured me that day.