Woot, glad to have you back! I can't wait to see what you give us this year=-)
Thank you. ^_^
Houdini is a procedural approach to content creation that involves building node networks that define a “recipe” to create detailed game art that can be applied over and over. You can wrap up these networks to create custom “smart” assets that are built by artists for artists. And with recent technological advancements, these assets can be loaded into game editors such as Unity or Unreal Engine or even custom game editors using a simple API.
Hmm... That's a rather interesting and impressive piece of software.
However, if I understand correctly (and I'll admit that I'm pretty tired at the moment, and so may be missing points), Houdini doesn't work with Blender, requires a separate piece of software--the "Houdini Engine"--to load the produced assets into an engine, and as to game engines, currently only has plugins for Unity or Unreal Engine 4 (although one can apparently use the API to produce plugins of one's own). :/
(These limitations are understandable, I daresay; it just leaves Houdini not terribly useful to someone like myself, who uses other tools than those supported--in my case being Blender and Panda3D.)