Jansen walking machine animation

An animation of a Jansen walking machine is on sidefx software's website. The artist used Houdini and its support of expressions to create it.

Rendering Tips

This blog has a bunch of tips on how to avoid bad renders: Stopping Bad Renders...By Per Andres.

It is a Cinema 4D specific blog, but it looks like some of the tips could apply to Houdini as well.

Curves

This is to record a blog entry with a visual dictionary of special plane curves.

OpenCL blog post

A blog describes possible Blender improvements using OpenCL. It also has some tips on installing it in Ubuntu 9.10, 32 bits, Ati 4770.