If you teach Economics this site might be for you.  Just search the term you need such as "cost benefit analysis" and you will get the videos that pertain to your query.   It will also give you a definition of the economic term searched.  It will list all the shows that have that term.  To see the website click here.  I posted about this site on May 29 2013.  You can see that post by clicking here.

The Economics of Seinfeld

From their site, "It is the simplicity of Seinfeld that makes it so appropriate for use in economics courses. Using these clips (as well as clips from other television shows or movies) makes economic concepts come alive, making them more real for students. Ultimately, students will start seeing economics everywhere – in other TV shows, in popular music, and most importantly, in their own lives."

There are 7 pages with the name of the episode and what economic term is used.  However you can use the search function for a specific term.  Note the site does not host all the videos in fact some cases it just gives you the episode name and time frame where the search term is given in the episode.  You will then have to search youtube or other sources for the episode in that case.  To see the site click here.