Here are some sites I am visiting when I am desperate for something interesting and I've exhausted my rss feeds:
http://www.google.com/ig : personalised google home. Add a clock and some flickr photo's, stick it on your second monitor and always know if dell have sent more spam to your gmail account. Add some bookmarks to my other top sites so they are ready wherever you may be.
http://del.icio.us/popular/free : the latest free stuff
http://digg.com/ : interesting articles, although the comments are rather inane. slashdot without depth (no nested comments).
http://tailrank.com/ : this one finds the articles that are most referenced by blogs and hence are presumably the most interesting (or bait the most flames). How did I find it? It crawls this site and I found it in the logs.
http://en.wikipedia.org/wiki/Special:Random : wikipedia random page. May need pressing a few times to avoid obscure star trek characters.
http://www.djangoproject.com/ : see if the magic removal branch has been released yet (django in joke).


In the same spirit of google/ig, there are:
Regards