Try Bananaslug. From their site:
BananaSlug was designed to promote serendipitous surfing: finding the unexpected in the 3,083,324,652 web pages indexed by Google. Directed Google searches return pages most relevant to your search term, based on the pages’ popularity on the Web. You may never see some of the pages way down the list that are relevant or interesting, but off the beaten path.
So we give you a little boost. We “seed” your search with another word, chosen at random, and this accidental encounter results in pages you may have overlooked. What, if anything, do all the results have in common? You tell me! We show the seed word at the end of the page, along with the number of results, and how many seed words we needed to try before we got results (it doesn’t always happen the first time!).
An interesting concept that does give some interesting results, indeed.