I just whipped up a brain-dead simple bookmarklet to check Technorati's link cosmos for the currently viewed web page. Just drag the link below into your bookmarks or toolbar or whatever, and whenever you click it, you should get the Technorati report on who's linking to that page.
No warrantee, express nor implied. Use at your own risk. If it nukes your system, you should be using a better OS, and it's not my fault... ;-)
UPDATE: It turns out that RTFM applies to me as well... Technorati already offers a version of a bookmarklet that does the exact same thing... Doh. Oh, well... My intension was good, even if I apparently can't read... Here's the official script.