Thanks for pointing out this splat feature, BWTR. I'll be playing with it today. C6 really is cool, but I came in as a newbie to it and there is just so MUCH to learn!
One of my favorites is the difference between a background and a backdrop. It's in the manual, but when you first read it, it doesn't mean anything and is forgotten. After a few renders it makes sense and you wonder, "How could I have forgotten this?"