What is ThoughtScore?	Thoughtscore is an open-source animated film by Dion Moult. Only open-source software is used in its development, the creation process is documented, and the source files are made available.
Who is Dion Moult?	Dion Moult is some guy who likes to work on this project in his (somewhat limited) spare time. Read more on his blog.
Where can I see the current progress?	Originally, the project was tracked on the BlenderArtists forums on this thread, but now it is tracked using WIPUP, and you can view its new project page here. Note that progress is slow.
Which software do you use?	Mainly Blender on a Gentoo Linux setup, but things like The GIMP, KDE, Ratpoison, Vim, LaTeX, Audacity, Inkscape, and Alchemy are also used on the side.
What does ThoughtScore mean?	Read the script.

Some links you may find useful:
Current Credits List (19 Jan 2012) - Latest Script (9 Oct 2011) - Latest Animated Update (24 Jan 2012) - Contact

Some hand-picked WIP images: