I was just sitting here drinking a cup of Natural Calm :) I really like it, too.
I'd like to add to your list if I may. It's a newer e-book by Dr. Dean on Magnesium, and has Q&A's at the end. She also briefly explains this Pico-Ionic Magnesium, and how it works. Nowadays, she seems to recommend this best as an oral form, although I have not tried it.