Lectures on "Search Engines: Technology, Society, and Business"

This lecture series on search ran at UC Berkeley in fall 2005. Although some of the material may already be out of date and generally doesn't go very deep, it's still a good (broad) overview of topics related to search and provides insights from different perspectives. They got some people from industry and the videos of the lectures are good quality.

Here's the course schedule with links to individual lectures: http://www2.sims.berkeley.edu/courses/is141/f05/schedule.html