For Mac users looking for a simple way to put your named movies into a folder...

You can use this terminal command I found
Easier if you create a 'service' on your system to open a terminal window at the chosen folder
Then paste this
for FILE in *; do FOLDER=$(echo $FILE | sed 's/\.[A-Za-z0-9]*$//'); mkdir "$FOLDER"; mv "$FILE" "$FOLDER" ; done

MAKE SURE YOU ARE IN THE CORRECT FOLDER BEFORE YOU DO THIS. It ignores existing folders. Only for files not in a folder.