The Teaching Company has posted online a free video lecture that focuses on what happens in our brain when we learn -- something that should pique the interest of pretty much any reader here. (Just what happens with those synapses when you come here every day?) The lecture (watch here) comes from a larger course called Understanding the Brain and is presented by Jeanette Norden, a professor in Cell and Developmental Biology at Vanderbilt University.
Side Note: The Teaching Company is also offering free access to another lecture (this one in audio) that surveys the "Masterpieces of Classical Holiday Music," including Bach’s Christmas Oratorio of 1734, Handel’s Messiah of 1741; and Tchaikovsky’s Nutcracker Suite of 1892. Listen or download here.