Matt Cutts is probably the 4th most popular guys in Google right after the founders Larry & Sergey and president Eric. Webmasters and SEO professionals might be more excited to meet and talk with Matt than anybody else in the Googleplex.
Here are 3 of the videos he recently released answering questions on SEO and Webmaster Basics. Some really good info here.
Quality of a good site:
Myths, Lerge Site Launches and Google Image Search
Optimizing for Search Engines or Users?