Lighting Schemes - pictures worth thousands of pictures...

I have got this irresistible urge to try and reverse-engineer all photos in glossy magazines that I see. I can't help it, but to keep on analyzing shades, catch-lights and specular highlights for ages, just to try and guess how a picture was made. It's a condition that was only to be expected after my first strobe arrived, but it is getting worse.

Websites like this one and this one make it a bit easier to get the few basic setups visualized.