Thought I'd also pass along an AWESOME site for finding poses.
This site is primarily a gesture and figure drawing tool. I also use it daily to do some gesture and figure drawing. You can set timers and it will randomly generate images for you to sketch. They've also recently added 'classes.' Where, much like a traditional art school drawing class you'll start out with quick sketches (like 30sec-1min) and gradually build up to longer poses. Excellent, excellent tool!
There's clothed and unclothed models and even animals. Check it out and support these dudes! They're awesome!
Here's today's pose: