this is 'A Boy And His Atom: The World's Smallest Movie':
and this is how it was with IBM's scanning tunneling microscope and thousands of carbon monoxide molecules:
you can learn more on their youtube playlist, it's quite fascinating!
and if that's not enough for you, do you know how small is the smallest guitar in the world? about the size of a single cell. it was made with the same method and technology as mentioned above movie, by Cornell University and it looks like this:
it actually plays music! ... but way outside human hearing range. oh well... read more on Cornell University's website.