Things to do at 3 AM.

#1. Get whooped at Jeopardy by a freaking supercomputer.

Gizmodo put this up a few weeks ago:

A computer that can have a conversation with you in real, human language is a hallmark of science fiction films, but has always seemed ludicrously unrealistic. Here's the thing: IBM just built one.

It's called the IBM Watson.
And at 3 in the morning (or at any other time of your choosing), it will pwn you.

Go on. You know you want to.
http://www.nytimes.com/interactive/2010/06/16/magazine/watson-trivia-game.html

#2. Or you could play Pac-man. 
Your choice. No pressure.