I did mine tonight, and my car still goes fine. Thanks for the write-up, Tom. My more exciting news is that I got my hands on a camera. Prepare to be bombarded with pictures; I'm going to a Porsche Club track day tomorrow. Tagging along with a GT3 I know. Should be fun.
Anyway, here's some of the pictures I took tonight:

Dirty leaky valve cover with coilpacks out.

Under the valve cover. My camshafts are showing.

Clean(er) and shiny valve cover with new gasket underneath.

Teaser photo. You can't wait to know more...