Also, so many designers are unaware of this, but I’ll point that there is an entire area fo design the deals primarily with language: voice interaction design. In it linguistics is not inspiration, it is the engine of the medium.

Many of the other fields you list, as well as those mentioned in the comments, also come into play in my work.

Making movies require a lot of multi-disciplinary people working together (Writers, Artists, Cameramen, SFX, Investers, Promotional). We, as UX also have to design based on inputs from other departments.

The process too have lots of parallels- story ideas and feature creeps (thinking of the most appropriate feature and saying no to the rest), storyboarding and wireframes (to see how the product will behave), pilot episodes and user testing (getting feedback and updating). The end result of both is to provide a great experience!

I love to hear film directors (Brad Bird, for example) talk about the challenges they faced behind filming a great scene or how they reworked the story according to budget cuts and technical constraints.

It makes me wonder if the discipline being talked about is really IxD, or if there is a budding discipline here waiting to be developed. It would be a shame to put all of these components together and only get wireframes and CSS ;)

Two angles I would like to include: science of happiness/well-being (as part of (positive/hedonic) Psychology, Genetics and Sociology) – Daniel Gilbert, Mihaly Czikzentmihalyi, Bjorn Grinde, Ruut Veenhoven, Dan Kahneman. If you are serious about delivering a positive/optimal user experience.

Next to that Evidence Based Design (http://www.use8.net/magazine.php?ArticleId=94) that has the potential to give design initiatives more scientific credibility.