What's the point of having a media specialist if they aren't specialists in the media forms of the day?

A student posted this on his school librarian's Twitter account. The conversation that began with that question proved to redefine every one's ideas about what libraries and librarians should be. To read their conversation and thoughts go to: http://www.schoollibraryjournal.com/blog/1340000334/post/1860043986.html?nid=2413&rid=#reg_visitor_id