http://searchengineland.com/video-how-g ... thms-90602
Google published a nice 4 minute video on how they go about improving their web search algorithms, the quality of results and the user interfaces.
They talk about finding problems, coming up with new ideas, testing those ideas, approving or rejecting those ideas and implementing the ideas.
Overall, much of this is not new to most of our readers, but the video does give you a nice refresher on how things work at Google.