Heh, all of the comments about the "Happy Birthday" intro are funny to read. I sort of have mixed feelings on it. At first, I thought it was insanely stupid and wanted to delete the file immediately, but finally decided I kinda liked how the song did a 180 from retardedness to awesomeness.
It is certainly memorable, so I'll probably keep it. That "Happy Birthday" at the very end cracks me up every time, too.