Perfect boarding (note, also drawn by its director). Nothing extraneous, it just gets the point across what is expected of staging and angle choice, and allows the other departments (BG, animation, color) to contribute some of themselves to the final product.
Storyboard to final shot: Ghost in the Shell 2 - Innocence (2004), dir. Mamoru Oshii, Production I.G/Studio Ghibli
Storyboards by Mamoru Oshii, key animation by Toshiyuki Inoue