Aaah I'm so glad that I found this thread!
I absolutely love rollercoasters and rides, and theme parks is one of my obsessions! It has been for years. I work at Thorpe Park, and I absolutely love it! I can't wait until next year, when I am 18, I'll be able to operate the rides then, and not just be an attendant!
Going upsdie down, or really fast, doesn't bother me at all, I love it! My stomach going over is great but is what scares me most...but I seem to love having that fear! The rides that has made my stomach go over the most is Detonator, at Thorpe Park, which is my avatar. It is only 100ft high, but you don't just drop, pneumatic pistons push the gondola down at speeds of 45mph, so it is very forceful and gut-wrenching. But I always go back for more...and more...and more...