I was very excited when I found out I have such an insane green tater.
I would have to think about it, really. Bombadil is quite nuts with all that singing, which makes me like this choice. Denethor, Gollum, and Thorin are all too true. And "insane Angband" sounds like something I would say in ME instead of "holy cow", so it makes me laugh. I suppose that Fatty Bolger was not at his sanest when he ran away from the Nazgul, starting the "FEAR! FIRE! FOES! AWAKE!" signal.
I shall have to think further.