Once... in a blue moon
There was a whole bunch of hype about this and as Isla and I stood on our balcony and watched the 1 hour lunar eclipse spectacle I can't say that I was that impressed. Sure, when you thing about all the astral physics involved then it's a pretty cool concept but the end result was... dull (with a redish tinge).
I managed to take this crappy photo but it gives you an idea as to how lame the whole thing was. Incidently, the last one was 7 years ago and there won't be another one till 2011.