Remember the lack of bidirectional navigation in our document windows? The problem is that you can go down in the folder hierarchy with the file system until you open a file, but you cannot go up from the document app to visit the file system again.
I just made a little patch for Evince to add an "Open Containing Folder" command, similar to the one that Firefox has in its Downloads window.
This patch is is at bgo#627443.
Unfortunately, Nautilus currently seems to have a bug. If you launch "nautilus file:///blah/blah/foo.pdf", Nautilus complains that "foo.pdf is not a folder". I'm sure this worked at some point before — you could make Nautilus open a window showing a folder *with* a certain file already selected.
In the meantime, my patch for Evince just causes Nautilus to open a folder window. It would be nice if it could also select the file in that window.