I've mentioned before that Linux is used extensively in the film making industry for effects and animation. This page gives you an entire resource for all the Linux based software tools, both commercial and free.
Also, the latest movie to take advantage of Linux is The Spiderwick Chronicles.
LinuxJournal's February, 2008 issue has done a cover story on the film and the Linux based film and animation processes used in bringing the fantasy characters to life.
So, for those who think Linux isn't for artists, animators and film makers...think again. Get Linux.