There is a DigitalPoint Forum thread named that discusses a neat PageRank tool at http://www.webmastereyes.com/. The PageRank tool is different from others, in that it will enable you to plug in a URL and it will then place graphical PR bars on all the links you have on that page. For example, I plugged in my corporate site's sitemap and it told me the PR values of all my pages on my site (since all my pages are listed in my sitemap. On the right hand side, is an image of how they plotted my PR values over my left hand side navigation.
Back to the PageRank debate. I do not believe it is worth much in terms of ranking. Google does claim that PR affects your crawl frequency. And when everything else is equal, you have to assume PageRank makes the difference. But when is everything else equal in our world?
Forum discussion at DigitalPoint Forums.