MAN, what else can go wrong?

[crazypete]

Honestly, unless I'm completely mistaken, there is nothing in that area that has oil running through it. It could be that the PCV valve has slipped out. Happen to me once. They are simply pressed in, so if it wiggles out, it would generate some oil spillage. If that little vacuum hose on the oil filler neck comes loose, it will cough up oil at regular intervals. Just ask my driveway. I know you've probably checked this, but my power steering pump "squirts" all the time when I turn the wheel to the lock and this fluid hits the underside of the hood and redistributes itself accordingly.

If you suspect the rear main seal, get some rtv silicone gasket maker and a long stick or rod and goop some in there as best you can.