You might not have the patience to render a truly accurate SSS shader. I know I don't. MentalRay has a 'physical' SSS shader that is supposed to be very accurate; but I've never used it because It takes eons to render. I'm not joking either, it takes a loooong time. That's w/o any advanced lighting. Throw in photon mapping, FG, and some decent AA... :sleep:

There's a 'fast SSS skin shader' that does a good job; but it isn't as physically accurate. Even that one is only 'fast' by comparison. It still takes about twice as long to render as a simple translucent shader w/ reflection. Which is really pretty fast considering everything that is built into the shader. It does translucency, fresnel reflections, multi-layered anistropy, 3 scatter layers, and some other goodies.

Friends don't let friends use booleans.