I've been reading up on HSPs for some time, as I seem to fit the profile quite well. What's more, I think I'm the quirky subtype called "Highly Sensitive Person - Sensation Seeking", i.e., HSP yes, and whatever you do, don't let me get bored, either

These are some more links you may find interesting:

http://www.hsperson.com/
http://talentdevelop.com/category/high-sensitivity/
http://healing.about.com/od/empathic/a/HSP_hallowes.htm
http://www.sensitiveperson.com/