Google is now allowing public access to its new search engine.  You can run your queries here -> http://www2.sandbox.google.com/ and read more about it on their webmaster's blog.

Code named "Caffeine", it is touted as their new and improved search engine.   What is really going on is that they are making major overhauls to the systems that work behind the scenes to generate the search results or SERPS.   I would highly suggest that you run some queries in their sandbox and see for yourself if you like the results you see.   They are openly soliciting feedback through the "Dissatisfied?" link at the bottom of the page search results pages.