Diego Inácio has created several geometry tools for Houdini, using Python.
SideFX have announced Houdini Engine, an API that will facilitate Houdini integration into proprietary studio software.
Jean Claude Nouchy - Houdini FX TD Showreel
Jean Claude Nouchy has posted his Houdini FX TD showreel, showcasing work from several high tier films.
Houdini - Apprentice Cook-Off Challenge
Join the Apprentice Cook-Off, a summer long challenge for Houdini users.