Matt Cutts' blog is the first place I look for any Google seo related issues (he's head of Google's webspam team).

Matt talks about the anatomy of a search result, and gives some useful tips on how you can help improve how your site appears in our results pages. This talk covers everything you'll see in a search result, including page title, page description, and sitelinks, and explains those other elements that can appear, such as stock quotes, cached pages links, and more.

Video of the latest installation in The Unilever Series at Tate Modern in London, United Kingdom, 'Shibboleth', by Doris Salcedo