I thought you might beat me to it on this one. My two cents...
I'm going to use the "C" word - compilation. Yep, it's a comp. I was disappointed in JM. I mean, I thought it would be like the Missy Monroe Cockstar video, original content, she was talking about being a cockstar, several scenes with different sexual circus acts. No, 4 scenes here, I can identify the origin of 3 of them. No mention of being a cockstar. The standard JM spiel says there will be "A Behind The Scenes Featurette" which is just a lie, no such thing.
I guess I still got my money's worth, the thing is all new to me. I don't oogle these whores for their personalities, so I go in with an open mind about Sasha Grey, only knowing she did a great job in a couple oral scenes I've seen. She does a great job in all 4 scenes, I give her highest marks for oral skills, she fucks like a demon, and does everything that could be expected.
Scene one is, I believe, from Throat Love 1. She does a great job fucking this guy with her throat and her pussy.
Scene two is, I believe, from Freaks of Cock 2. After she does a great job oral and fucking a hung black guy, he hands her off to a guy with a huge fake dick, and there is a huge fake cum shot.
Scene three is obviously from 18yearsold.com, pictures of the scene can be seen here:
http://www.18yearsold.com/galleries/pb03/sashagrey/index.html
I don't know where they got the fourth scene, it starts with an uncredited woman spanking her and then guiding her onto a cock. Here's the crew:
And an obligitory screen cap:
So, that's my take on it, as far as Sasha's performance, top shelf. I like her, because I am positioned so I can just watch her suck cocks and get her holes drilled, and don't have to put up with any other parts of her. The less you know about these whores, the better.
-Chuck, Vegetarian fanboy