In the hall of the Mountain King

The scene that this music supports is from - quite possibly - one of the best movie sequences of the year. I'll probably end up seeing The Social Network again, and this scene is one of the reasons why.

The score itself is phenomenal too; Trent Reznor and Atticus Ross (Nine Inch Nails) did an awesome job. I listened to it before I saw the movie, and I didn't quite see how it would work in a movie, but it fucking worked.

The site for the score is here: 

http://nullco.com/TSN/

You can buy the score for (it's worth it) from Amazon.com here: 

http://amzn.com/B0044430H8

Also, go check out the film. It doesn't matter if you love, hate, or don't give a shit about Facebook. David Fincher is a master filmmaker, and the movie itself is worth the price of admission.