Latest from the banquet table of Google is Google Instant.
Check out the introductory video done by Google and the announcement post by Google. And also, Google Instant (Bob Dylan Style).
Google Instant is the new feature that automatically starts listing the search results for the text typed (without the ENTER key being hit) and updates itself whenever the new text is typed.
Click here to check the video screencast I created, of Google Instant in action.