Clean subset of library

The ability to clean the library is nice when there have been several files removed.  However, for those with large libraries, this can take quite some time.
It would be nice to be able to clean a subset of the library.  For example, if you right click on a TV Show, it would be nice to clean the library just for this show, so it would only go through the episodes of that show and remove items that no longer exist.  This could save significant time.