Need help with photoshop effect...

Hey guys, I was hoping you could help me recreate the graphic effect used on the Scarface dvd. The one that has just an image of Tony Montana standing there in his suit with a gun in his hand. Half the picture is white, the other half black, and Tony is kinda like a negative image. It's sorta hard to describe but I want to recreate the effect using a picture of Randy Couture I found. Can anyone give me some assistance?

It's simple, just desaturate the picture, then turn up the brightness so it will wash out the white and then turn up the contrast, will bring back all the dark parts.