Extra Finder Metadata Columns for Movies, Music, and Pictures
nigelgoodman (via Peter Hosey):
In the “Movies” folder and any folder created inside it the above extra meta data columns can be added, and this applies to any other “Movies” folder created anywhere else - on another drive for example. But if you have another folder elsewhere that is labeled “Films”, for example, the extra columns cannot be added.
However it is easy to add these columns - simply (re)name the folder “Movies”. Open it and add the columns that you want. Then return and rename the folder back to “Films” or whatever. The extra columns remain and are still there after a log-out or restart.