The Spit thread was beginning to head towards Airshows, so I would start this one.
I was a the free one at Folkstone a few years ago watching a routine by a SEP, but I can't remember which. The crowd was looking at it as it flew off to the right (as you look out to sea), when the crowd was hit by this godalmighty BOOM as 2 Tornados, low down, flew in from the left, full Afterburner, the works.
It scared the bejesus out of everyone
. Fantastic