I can't believe no one has posted this yet. Maybe I'm just a sucker for the classics. The most violent and savage exhaust note I've been around:

http://www.youtube.com/watch?v=z3AUP...eature=related

http://www.youtube.com/watch?v=0g49ygzXRns

Of course, it's all a matter of what's the most music to your ears! Great clips so far.