Ok... after a hard night of gaming on Dec 21 (assuming you are still up), there will be a total lunar eclipse visible from North America. A lunar eclipse is not as spectacular as a solar eclipse, but its still pretty cool to see a blood-red full moon up in the sky. Time is "roughly midnight-ish", but see the link to the picture to adjust for your timezone. If I'm still in-game that late, I will try to remember to say something in /AS and /TUATHA to remind folk to stick their heads out the window and take a peek.
http://www.mreclipse.com/LEdata/TLE2010Dec21/TLE2010Dec21.html
So, go outside for 10 minutes before heading to bed and check it out :)