bantha is correct, in the sense that, Sub Surface Scattering is definately "The" catch phrase for technical success with skin.

What I do'nt understand s why people, not just bantha, mention a need to "Fake" this; with regard to Poser, and/or Face_Off's pythons?  If you look in the P7 Manual's Index; for SubSurface Scattering, you are directed to page 326, which is where the FastScatter node is.  Also I became aquainted with SubSurface Scatting, when researching the HyperREALV3.PY.