I've spent a lot of time -- a lot -- observing the Moon. I include using my naked eye, binoculars, and telescopes of all sizes (including Hubble, come to think of it) over many years, since I was a kid.
And in all that time, I've never had the good fortune to see something like this:
Tom Guilmette took this video at Fenway Park in 2010, and I'm not jealous of his good timing at all. Really. I'm not.
Tip o' the oxygen mask to Ronnie Harris.