Everything is done in Houdini expect the terrain. It is done in Zbrush/Mari/Photoscan. I did the flip simulation and white water simulation within the CGworkshop with Spencer Lueders. Great source of knowledge.
In latest project i had a lot of clones which need to be placed in straight angle to each other. I tryed to make it with step and random effector, but it was very hard to setup, so i thought why just not use formula effector:)
I added some subtitles, so i hope it will be easy to get nerd stuff.
Also check out other tutorials on my web site philipppavlov.com