So, tonight, if you are anywhere in North America, and are awake way to early in the morning, you should go check out the Lunar Eclipse.
This is supposed to be a really good one, and just to make it extra special, its happening on the Winter Equinox, otherwise, its pretty much like any other Lunar Eclipse.
Just so you don't get confused, this happens at night, when the Moon passes through the Earth's shadow. Since you'll not be looking at the sun, you don't need to bring your welding goggles!
More information, straight from the sciency good geeks at NASA: