First of all, let's give a moment of thanks for scientific experiments, especially scientific experiments gone awry. Without them, movies would be much more boring. First of all, we would have very few superheroes: Spider-Man, the Hulk and the Fantastic Four wouldn't ever have existed. But even outside the world of superheroes, science is often the villain in movies, with cold logic warping the minds of the bad guys and reckless tampering with nature leading to bloodshed. The latter seems to be at play in the new genetic-modification horror film Splice, and we've been inspired to put together a list of some of our favorite scientific disasters in movies. Do not duplicate these tests!