Slick.
This is a tool developed by Mark Meiss and Filippo Menczer at the Indiana University School of Informatics in March of 2006 to allow you to explore the differences in the results returned by different countries’ versions of the major search engines. We currently work with the Web search and image search functions of four national versions of Google and Yahoo!: the United States, China, France, and Germany.
Link here via beSpacific.
Alex Eckelberry
PS— In order to have the most accurate comparison, they turn off Safe Search, so be warned.