Charcoal. Not just for digestion.

Just when you think you're getting good at something, go check out But Does It Float and eat a fuck-tonne of humble pie. Seriously talented people.

A favourite:
Robert Longo working in charcoal

Also, this is some of the most stunning animation I've seen in ages... Simple drawings plus mega-skillful rendering...

Clockwork from David Prosser on Vimeo.

Makes me think I've got hells long way to go...