I've done the "plan your Disney trip" one in the past with my students. Like others have said, it's a great one to work in both math and language. You can either assign them a set amount and a fictious family, or you can let them use their own family and go "sky's the limit" on their budget. Depends on whether you want to mark for accuracy or creativity, I guess. Work from the official Disney site and fan sites like Allears and Mouseplanet, plus sites like Expedia or Travelocity. For print resources, raid your local
travel agent and/or order all the Disney vacation kits (the vacation DVD is also a nice bonus). Our final product was a brochure done in MS Publisher and an Excel budget. (If you want to work in geography as well, have them also plan their route there, complete with stops along the way, etc. We didn't do that part, 'cause they all decided they were flying so they could get there faster.)
There's also the inventions angle...research some of the inventions or other technologies that Disney has either patented or first showcased at the parks. Audio-animatronics, some of the animation technologies, ride vehicles, things like the Segway or the other things in Innoventions...there's got to be some great info out there that could be worked into a science unit.
Or, how about World Geography, but focussing on the countries of the World Showcase?
For anything to do with animals, there's Animal Kingdom - maybe they could plan new lands or rides to showcase animals that AK doesn't have yet?
If you want to go all out on the technology angle, use one of the sites like pbwiki to have your students create their own wikipedia-style site of Disney knowledge. They could all choose different aspects of Disney to cover, which would allow total freedom of research topics. Or, you could have them focus on one aspect, like the parks or the movies, etc. If you choose this angle, make sure you watch out for copyright issues...Disney can be a little sticky about violations.
Why, yes, this is something I've thought about a fair bit...but then again, I'm also a Disney-loving Teacher-Librarian...
