Admit it, we've all been there, visiting our favorite museum and fighting the overwhelming urge to "accidentally" touch the canvas while pointing out a particularly skilled brushstroke. There's just something about being in the presence of a work of art that's worth more than what most of us will earn in a lifetime that really gets the blood flowing. It also doesn't help that the only thing that's usually standing between you and a priceless work is the aloof security guard 10 feet away. Combine all those variables with general human clumsiness and of course stupidity, and the possibility of a few museum catastrophes is certain. Find out what happened when these museum-goers get too close for comfort with The Worst Accidents That Have Taken Place in Museums and Galleries.