I am able to obtain DVDs of college lecture courses presented by "the teaching company" from our main library branch. their web site:
http://www.teach12.com/teach12.aspx?ai=16281
The lectures cover a wide range of topics: arts and music, literature, mathmatics, philosophy, science, etc. many of the lectures are either audio or DVD.
these are popular and one must be placed on a request list. because i request several topics, i have never had to wait for a long time to obtain one. best of luck. madelyn