Pose mainiacs

If you want to try some figure drawing and don't have a model handy, why not try Pose mainiacs ? this is a really useful site with daily poses requested by users, random poses, negative space, and even 30 second poses. You can also turn the model 360°to get a complete view.
What I like is the random element which just does not happen if you have to set up everything first in a pose program for yourself. Another great thing is that even in real life a lot of these dramatic forshortened views would be nearly impossible to get.

Random pose sketches

negative space sketches