If it doesn't exist, I might write a
Word2Wiki2WordSync....
I for one would very much welcome a Wiki-to-Word (or even better: to
OpenDocument) converter.
In fact, that has already been attempted:
http://tools.wikimedia.de/~magnus/wiki2xml/w2x.php
However, that doesn't really work perfectly AFAIK.
I've been told that converting MediaWiki markup to any other format is
difficult at best; that's because there's no proper parser, which
usually results in possible ambiguities and whatnot... (this description
may be somewhat inaccurate, but it should do the trick here)
Still, being able to post-process wiki-created documents in a word
processor (e.g. for publishing manuals) would be great!
-- F.