On a more serious note, coming south in 2011, between Bermuda and St.T, my wife and I saw a star go super nova one evening. I was looking at it when the star got so bright it completely blocked out the light from all the stars around it, then it slowly faded away to nothingness. We logged the date, time and quadrant and sure enough when we got to St.T, we looked it up on the web and that was exactly what we saw.
I've had meteorites land close enough to see the steam, etc, but the super nova was the most spectacular astronomical event I've ever seen.