Every year Google posts its year-end zeitgeist. Heres 2008!
Im always amazed at how general some of the queries are (i.e. how to write, what is love, what is art, etc.) and some of the relationships between the top two queries in various categories (i.e. in Fastest Rising US Searches, the top two are obama and facebook, respectively, or in Fastest Rising Google News, the top two are sarah palin and american idol, respectively).