Video streaming blocking

I would like to be able to block video streaming sites like youtube.com, dailymotion.com, metacafe.com, break.com, etc. without listing these individually as blocked sites.  The closest category to block is "entertainment and music", but this blocks news articles as well and some restuarant web sites, etc.  In other words, overblocking.  

 

Is there a plan to include video streaming as a category?  I see this in other filtering software.

 

-mpollack