Haven't seen a warbird since I saw a C47 in the pattern three years ago when I was in Vermont. It's been too long.
But I had a few moments like that in my time. One afternoon two ex French Douglas Skyraiders thundered low over my house enroute to the US via the nearby airport, like something out of a Vietnam movie. Later I believe they were used in the movie 'Flight of the Intruder.'
Before that, when I was a kid I saw dogfighting WW1 biplanes, including one low level dice for which I was the sole spectator. Probably my fascination with flying could be traced to that moment. No I'm not that old it was for a movie, in fact a couple of movies.
But easily the most impressive moment ever wasn't an old warbird but a unique formation.
One sunny afternoon in Dublin, Ireland where I live, I suddenly heard an incredible sound, sort of roaring droning thunder. I ran out to look and over the house flew a formation of US Navy aircraft in a tight formation, one of each aircraft representing the complement of the the US navy carrier JFK. Low level turning after a flypast of the city, F14's, F/A18, E2 S3 etc. If there was ever a more impressive example of airpower I've yet to see it. Awe inspiring are the only words I could use. I went visit them at the airport later. Very exciting indeed. Pity I can't enlist.