Tea and Cookies in Houdini is a two part commercial tutorial in Houdini, going through all the steps of the scene's creation.
Houdini for Games - Frima Studio
See how Frima Studio use Houdini to generate content for their games.
Houdini Geometry Tools
Diego Inácio has created several geometry tools for Houdini, using Python.
Jean Claude Nouchy - Houdini FX TD Showreel
Jean Claude Nouchy has posted his Houdini FX TD showreel, showcasing work from several high tier films.