WP Super Cache Plugin
WP-Cache is a plugin which speeds up the load-time of a WordPress site by caching pages the first time they are viewed and then presenting these stored pages to future visitors. If you are hosting with Media Temple and having trouble with their slow MySQL response times (which they are working to improve), this plugin is extremely useful. It’s also very helpful if your site gets Dugg or Slashdotted.
Read more about the WP Super Cache plugin here >>