There are many people with more eloquent takes on tonight that frame this election in some very poignant and trancendental parameters.  I'll only make two points.
First, on an international level, I think this has to be viewed as a breath of fresh air by all countries around the world.  Not only are they happy on a policy level, which is a given, but I think that on a human level they are feeling the same assurance that we felt while watching the rallies in Lebanon, and the Ukraine, among others.  The movement in Grant Park to celebrate the election of Barack Obama feels as important to the development and direction of our democracy as the rallies that have created democracies around the world.  I can only hope that the planet looks at our decision with the same amount of hope that I have looked on the other great democratic revolutions of our time and works with us to make the earth a better planet for our collaboration. 
Second, with Joe Biden as the VP, his senate seat is vacated.  The governor of Delaware will now have to appoint a senator.  My question is, what if he picks Beau Biden, the Delaware Attorney General and a Captain in the JAG corps serving in Iraq?  Does he come back from Iraq or is he disqualified from appointment by his active military status?  Something to look in to...