Leonard Pickel has spent his life scaring people. As a designer of haunted houses, he's worked around the world, creating spaces that will scare the pants off of mere mortals. (He's also a Trivial Pursuit question.) If you've been to Six Flags Great America or Universal Studios in Orlando or Madison Scare Garden in NY, you've survived Leonard's work.
For more information, or to get some help building your own house of horrors, check out Leonard's website.