Crystallography explained in three minutes

A nice little animated introduction to the science of x-ray crystallography - one of the greatest innovations of the 20th century - is here (or it might even work from the image below) - 

"The film explores the extraordinary history of crystallography. To date 28 Nobel Prizes have been awarded to projects related to the field and X-ray crystallography remains the foremost technique in determining the structures of a huge range of complex molecules."