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Have a look here

I also posted the direct link to the whitepaper a few posts up

I guess he's talking about Jimenez's SSS, not about Naughty Dog's PSSS.

Nevertheless...

Check this out:
http://www.iryoku.com/achievements
http://www.iryoku.com/separable-sss-released

The main idea behind the new separable SSS approach is that you can get very similar results to the full 12-pass approach ([Eon07]) by just using a regular two-pass setup. It can be done in screen space and is really really fast (you may want to see this related post). I hope to write something about this in the future. However, the source code of whole demo is readily available on GitHub.

These last months I’ve learned a very important lesson: efforts towards rendering ultra realistic skin are futile if they are not coupled with HDR, high quality bloom, depth of field, film grain, tone mapping, ultra high quality models, parametrization maps, high quality shadow maps and a high quality antialiasing solution. If you fail on any of them, the illusion of looking at a real human will be broken. Specially on close-ups at 1080p, that is where the real skin rendering challenge is.