Video Article on Internal Rotation

Another thread has discussed Mr. Kelly Starrett's mobility WOD, and the articles featuring him in the Crossfit journal. They just put out another article in the 2-minute drill series concerning mobility, this time about internal rotation of the shoulder. Relative to our interests here, there is a good discussion about internal rotation, the shoulder, and muscle ups. Worth checking out if you have a subscription.

I don't have a subscription, but I assume it's all about internal rotation with retracted scapulas/good position within the glenoid socket, as opposed to stereotypical benchpressers with internal rotation?

That's right, although the presentation was less about the anatomy, and more a demostration of specific techniques to insure good shoulder mobility, and getting the shoulder to be able to work from the right spot, i.e. not positioned forward.