Think you're a Halloween Geek? Test your enthusiasm at the Halloween Convention April 29th - May 2nd, 2010 in Valley Forge, PA. Enjoy professional level seminars on everything from makeup to Monster Mud techniques. The practicalities of running your own haunted attractions, mold making, Styrofoam, using magic to scare and entertain. Need to unwind? There's a costume ball. Show off or shop for your monster collectibles.