Wait a second. I just saw an image much larger than the thumbnail I originally found... That's not an effect in photoshop... at least not one that it ships with. It could just be the images I am finding are of poor quality, or even that I am going blind at a much higher rate than I thought, but unless I miss my guess, that's the type of artwork that takes movie cells from the film and assembles them into a picture, much like the popular ones of Yoda, Darth Vader and the One Dollar Bill.
Heh, all in one sentence.
I'm not sure what they used to get this effect. "Absorb what is useful, discard what is not. Add what is uniquely your own." - Bruce Lee - The Tao of Jeet Kune Do