I had to share these. This is one of the best line artists in the world. Ronald Monroe is the man behind the mathematical precise hundreds of thousands of little tiny lines which make stunning drawing. His 'bank note quality' could be used to actually draw real money for the Federal Reserve!
If you're still not watching him you really should!
Here are some examples of his astounding work:
The amount of work and effort needed for this is genius level and nothing less, he's just too humble and kindhearted to recognize that.