To those concerned about interdisciplinary colleges,
Western has an interdisciplinary program called Fairhaven College of Interdisciplinary Studies. Fairhaven offers most of the traits described in previous posts.
http://www.wwu.edu/depts/fairhaven/
I love the ideas behind Fairhaven. The more I learn about it's history and curriculum the more I am intrigued. However, to me, Fairhaven feels closed off. When I go to register, only a few courses satisfy my GUR's, and those are closed to general students for the majority of the registration period, by the time they open I have already settled into my schedule, and in some cases bought books and started working. Also, there are no interdisciplinary courses at Fairhaven that satisfy the requirements for my major (I am a chem major). Plus, I am on financial aid. So, no matter how interested I am in a Fairhaven course, it is hard to justify spending the money on credits that are not part of my graduation requirements, because it could jeopardize my graduation.
I would be more interested in Fairhaven if it was more accessible to me (maybe it is and I just don't see it?). I think it would be exciting if there were more hybrid style courses available to all students that satisfied GUR's and major requirements (especially in math and sciences).

Come play in our sandbox, folks! What are your thoughts on interdisciplinarity?
I transfered to WWU from a community college where interdisciplinary studies were a major focus. The recipe there seamed to be relatively simple. Get two departments together, weather they feel like they fit or not, and create a course of study that overlaps in a way that engages the students. Typically, an instructor from both departments would teach the course over a period of two hours a day.
One course that I took was called "sound ideas". It was a fusion of contemporary mathematics and elementary music theory. We learned the basics of the diatomic scale, and related some of the concepts of harmony, computer programming, and composing to mathematics. For instance we used matrix theory, specifically markov chains, to compose a musical piece that was statistically identical to greensleaves.
Ideas like these may be limited, and formulaic, but they are thought provoking and might open a students mind to new ideas and new methods.
At Western, I am just finishing up a course in analytical chemistry. Our instructor was Dr. Cancilla. the course verged on interdisciplinary in the sense, because Dr. Cancilla brought his experience in environmental chemistry to the discussion. For me this brought the class to new heights.
One of the things that brought me to Western, over places like WSU and UW, is their reputation for under graduate research opportunities. I think that professors should be encouraged, not only to bring more to the classroom then what can be found in the textbooks, but to bring more then what is traditionally found in their field. A great way to do that is to encourage inter-departmental collaboration. Create an analytical chemistry course that centers around environmental science. Create a painting class that details the chemistry of pigments (get those fine arts majors into the lab developing new chromophores!), an english course that centers around the history of mathematics, a nuero-science course that focuses on the effects of music on the brain. Encourage collaborative research efforts among differing majors.
I hope that helps. thanks for listening. I am interested in seeing more interdisciplinary opportunities.
-don't hate, contemplate.