Three in particular will stick in my mind forever.
For sheer awe-inspiring "wowness" the flypast at Ringway by the NASA 747 complete with Space Shuttle will take some beating. <img src="eek.gif" border="0">
Then, there was the final "what the hell" multi-ship scramble and general naughtiness-fest by 16 (I think) Lightnings at the last Binbrook Open Day ever. <img src="eek.gif" border="0"> <img src="eek.gif" border="0">
But the prize goes to the anonymous USAF RF4E pilot at a RAF Church Fenton Display in the 80s who, after a couple of fairly ordinary standard-issue USAFE whizz-pasts, disappeared into the distance only to enter stage right unannounced a few minutes later in full-on "Wrath of God" mode. <img src="eek.gif" border="0"> <img src="eek.gif" border="0"> <img src="eek.gif" border="0">
The sound of the engine noise trying frantically to catch up with the rapidly-receding airframe, mingled with cries of "My word, that was rather loud" and "Gosh, how unexpected" (or words to that effect) will follow me to my grave. Well played, that man!