Nate; if you want to hear a sound that will make the little hairs on your arms and neck stand up; then go see the Springfield Mile. Not only does it sound like nothing else, but the racing is really freakin' incredible.
You can also come to upstate New York for the Rhinebeck Grand National Super Meet in June. Awesome show. You will see original board trackers running around the fairgrounds, as well as vintage European and Japanese race bikes, steam-powered motorcycles, electric motorcycles, hill climbers, all kinds of crazy stuff. Lots of fun.
Last year, I went to Rhinebeck and picked up a speeding ticket on the way home. I was caught doing 70 in a 55 on the Taconic Parkway (I was trying to out run a thunderstorm). It cost me $235.00!!!