You can also Cmd-click the document icon in the title bar of a document window (not the title, just the icon) and get a Finder-integrated dropdown with the same information.
You can also Cmd-click the title :-)
Nice! Should've been the default... heh :)
I find View > Show Path better.
I tend to just CMD-Click on the icon in the toolbar to see the path. (Works in most other apps too)
Any way to open a shell directly to a directory I've selected in Finder?
Drag its icon to the terminal to insert its full path. A 'cd' in front of it will do what you want.