You would also like this:http://www.youtube.com/watch?v=DtKCNJmARF0Beethoven Virus is just so awesome.
That would be Beethoven's "Pathetique" part 3.http://www.youtube.com/watch?v=LKtfLwvEmZoThe intro part, which recurs about 1 minute into the video and then about 2 minutes in.