Headsqueeze, a new YouTube channel that premiered December 21 and is hosted by James May of Top Gear (and other shows) fame. As the title may suggest, it is a channel with educational, yet entertaining videos. James May hosts a series, but there are other series, such as the Knowledge Badger (he drives a cab giving you knowledge, like who had the first flushing toilet!), Live Experiments and Sci Guide.
Check out the introductory video:
And the first video I watched: