I work with all my media files on a different hard drive than my system and apps, so I always found myself working between two Finder windows to manipulate files.
Now I've put aliases in my home directories media folders (music, movies etc) to key branches of my external drive's file tree.
So Instead of moving files between Finder windows which each represent a specific drive path, I now only have one finder window open and can move files within the same column(s) to different hard drive paths. Sure feels more efficient to me...

