My parlor trick is "one hand clapping." It freaks people out, but I've done it naturally since I was a little kid. Basically, I can keep my wrist stiff, while letting my fingers flop back and forth really fast, making a clapping sound on my palm. It's pretty awesome.

Aw, come on! What about Leila's Hair Museum in Independence, MO? Who wouldn't love ENTIRE rooms covered in Victorian hair wreaths? And I second William Perry's recommendation of the Glore Psychiatric Museum in St. Joseph, MO. The creepiest part is their use of 1970s/1980s store mannequins in their displays. And if your headed over to Munich, Germany any time soon, please spend some time at the Center for Unusual Museums (ZAM: Zentrum für Aussergewöhnliche Museen") which features a Chamberpot Museum, the Easter Bunny Museum, the Pedal Car Museum and MORE!