I've recently made a Livestream Channel so i can record my doodles and scribbles from time to time.
If anyone is interested how it looks, check it out:
http://www.livestream.com/scribblingandsketching
If you won't be able to catch me when i'll do it live, you can watch it any time later (on-demand).
Take note that those are just scribbles. No rules, no anatomy, no nothing, just scribles to get my imagination working :)
I try to make every individual sketch in less than 15 minutes so you won't get too bored.
Software: Photoshop CS6
Hardware: Wacom Intuos4