This week I found the very interesting Big Think YouTube channel. It is a collection of videos of a lot of experts sharing their knowledge, opinions, views, etc. The videos are usually short and tend to be about 5 minutes in length. If you haven't seen any of the videos, I highly recommend that you head for the website and pick your field of interest.
One of the videos I can recommend is this one, in which Larry Wall talks about 5 programming languages everyone should know today: