This is a very useful link to know and bookmark.
Since 2000, Fermilab has archived the videos of various lectures given there for public consumption. While most of it are on physics, there are also a few on other topics of interest. You can access the list of videos on various topics at this link. What I also like is that they also include the technical level of each of the lectures, which ranges from "General Public" to "Student" to "Physicist". So someone can make a quick decision if he/she wants to view such a video.
This link will be added to the Physics links here.