I've seen it twice; it's an absolute BLAST to see!
The second time, something strange happened - it just suddenly
"disappeared." My Dad figured that the sun was blocked by the
earth at that point. Simple, I know, but it was still very surprising
to see it suddenly disappear like that.
But anyway, yeah, it's a lot of fun to check it out.
It's also REALLY amazing to see how FAST it's moving.
I guess it's doing like, 24,000 miles an hour or something.