Gesture Drawing

I recently discovered a website that offers free gesture drawing sessions. It's a great tool that I use if I'm not able to get out and sketchcrawl. They offer costumed gesture drawing, nude figures, and a wide variety of animals. You can also choose the length of the poses as well. Gesture drawing is a great way to knock out a couple of pages in your sketchbooks.

http://www.pixelovely.com/tools/gesture.html