Here’s what PopSci had to say:

It’s the video game that could provide a definitive response to the question, can games be art? Cinema-grade MotionScan technology allows actors, such as Mad Men’s Aaron Staton (seated), to actually play their characters (inset), giving Rockstar Games’ L.A. Noire an exhilarating level of realism. A detective’s brow furrows in frustration. A witness’s lips purse. When suspects lie, it’s revealed in the lines of their faces. The effect is at once uncanny and cinematic—and certainly unprecedented. Gamers will never look back.