I actually love the ‘Print this window’ button. For instance on the devx.com. Usually they break up articles into 5-6 really short pages to maximize the ad revenue. Clicking on ‘Print this window’ button brings up a new window with the entire text of the article in it.
To that I would also like to trash consultancies that ramble endlessly about W3C standards and then attempt to get designers to adhere to those, even when they are neither dealling with HTML or XHTML but ASP.