This video shows the drawing technique of French comics artist (though I suppose that'd be BD artist, since he's French) Emmanual Guibert. This is the technique he used on his forthcoming English-language comic, Alan's War.
This video has been making the rounds on a lot of comics blogs, but maybe you don't read a lot of comics blogs, right? The video is just a bout a minute long, and it's fairly mind blowing. Artists, and the methods they use to achieve the effects they desire, really can be magical. Enjoy.