I have done rendering test for many years and one of the scenes I used (coming from Radiance) is the Conference Room:
See e.g. this link [www.janwalter.org].
Recently I started using Houdini Indie for some of my tests and here are a couple of videos showing my first results:
A simpler one about the Cornell Box:
At some point I will make the scenes available for download ...
Cheers,
Jan