Which I just learned about!
There won't be another total eclipse of the moon (don't sing it!) until 2010, so go check out tonight's if you can. There is also going to be some star and Saturn hanging around it, which is apparently stunningly rare, and won't happen again this millennium. So you'll probably be dead for the next one.
Here is one page about it And here's another And
here is a pictoral representation of what's happening when, PST-wise.
Hooray for the sky!