This succulent is about 1.5 feet tall. The leaves are flat with a white hairy type substance.
What is it called?
This is one of the Kalanchoes, Kalanchoe beharensis, probably the variety 'Fang', judging by the furriness, the scalloped, brownish edges to the leaves and spiky looking protruberances beneath the leaves. Link to image here
I believe it is Cotyledon tomentosa bear's paw.
I originally forgothow I got to this conclusion. Thanks to comments below, here is my reasoning:
I grow different species of Cotyledon. I grow Cotyledon orbiculata - I have a really well grown orbiculata plant. I also have the "mint truffles" variety and a possible variety of Cotyledon "ladismenthsis" or a variance thereof. So, I started looking up Cotyledon varieties, and found a few different images references to the tomentosa bear's paw.