Posemaniacs- I went to Christina Wald's class at NKU last week and had a nice time- we were talking about drawing and gesture drawing and one of the students mentioned this website- I checked it out and it looks pretty useful.
There are timed poses that you can use to practice gesture drawing at home, and the figures are flayed so you can see their musculature. Also you are able to rotate the figure as needed to understand better why certain things look the way they do- and enable or disable a grid overlaying the image. Very cool!
Do you have any drawing reference sites that you like to use?
PIXELovely- this site has a timed setting as well as the option to choose nude or clothed figures, and it also has a section on animals! The site is also working on getting enough donated to start a section based on practicing hands and feet, which would be great as well.
Figure Drawing Reference on Tumblr- this Tumblr page is updated 4 times a day and has reference divided into Male Reference, Female Reference, and Portrait Reference (Male and Female). You can also just view the main page and see it all together. These images aren't timed but they're well lit and the portraits focus on people with great expressions.