Idea picked up from a famous LinuxWorld delegate: wouldn’t it be cool if someone took the relevant bits of code from the OpenOffice.org core, and wrote a silent helper app for converting OpenDocument files into MS formats? Once you installed it, it would register in Windows for the OpenDocument MIME types. Then, when an Office user got an OpenDocument document by email and double-clicked it, the program would silently convert it to MS format, and open Word (or Excel or whatever) on the temporary file. So it would appear to the user as if Word could read OpenDocument docs.
(Yes, you might be able to build the same function into Word itself as an addon, but I suspect that might be quite a bit harder, because you’d need to understand Word’s internal data structures.)
Such a converter would be an important part of the migration path for an organisation moving to OpenDocument. The great thing about it is that it would turn Word into a second class citizen. If everyone’s exchanging OpenDocument documents; OpenOffice.org or KOffice users can both read and write them, but Word users can only read them. What a good reason to upgrade :-)
I wonder how hard it would be to write? It’s basically just a scripted copy of OpenOffice.org, so surely not too hard?