I realize it's probably only used by the Ethiopians, but how do they view it and how do the other OO view it (if at all)?
I find it pretty interesting. I haven't read too much of it, but the very beginning is neat:
Then the Father, and the Son, and the Holy Spirit said: "Let us make man in Our similitude and likeness" and with ready agreement and goodwill They were all of this opinion. And the Son said: "I will put on the body of Adam," and the Holy Spirit said: "I will dwell in the hearts of the Prophets and the Righteous"; and this common agreement and covenant was fulfilled in Zion, the city of their Glory.
-Kebra Nagast, pg. 5, translated by Miguel F. Brooks