I've had the opportunity to use the "Bodies in Motion" site, created by Scott Eaton, over the last few months and have to tell you - it is amazing. From the carefully curated body types, movements, lighting, and artistry of the photography, to the high resolution photos, multi-cam function, and timer this has become my new go to reference. I only wish I had something this comprehensive when I was a student studying anatomy and motion. I highly recommend signing up.
Here is a link to the site which goes live on Jan. 16th. For fun I've included some of the drawings done from the "BiM" site below.