More famous for his sculptures such as The Kiss and The Thinker, Auguste Rodin was also a very talented with a pencil. If you are in Paris please go to the Musée Rodin and visit these beautiful works. If you aren’t in France, you can have a glance of some of the drawings here.
I have always had an affinity with figure drawing. To me the quick, raw lines are the best way to capture a body. Bodies are constantly in motion (even if it is just a heartbeat) and a successful figure drawing always alludes to that.