I think i saw that broad bummin' it in Brockton once. wait. maybe a homemade porn that I saw for sale in the bargain rack in chinatown. cant quite remember.
the background effect is called bokeh. it's a from a japanesse term.
Bokeh is simply a way to describe how out-of-focus points of light are rendered. It describes the appearance or "feel" of out-of-focus backgrounds and foregrounds. Differing amounts of spherical aberration alter how lenses render out-of-focus points of light, and thus their bokeh. The word "bokeh" comes from Japanese. I forget what it originally means from: http://www.kenrockwell.com/tech/bokeh.htm
the way to get good Bohek is to use Apreture to isolate your DOF do that it only includes the model you want.