My wonderful newspaper, the NRC, had a nice article yesterday by Marie-Jose Klaver (who also has a nice blog) about Web 2.0 in the workplace. It was titled: "Web 2.0 voor al uw communicatie" [in English: Web 2.0 for all your communication]. It has some nice examples of Dutch governmental and non-governmental organizations using web 2.0 principles and tools.
(I don't have a link to the article yet, because the article wasn't published online yet. As soon as I do, I'll let you know!)