You will need to install a user script manager extension to install this script.
NOTE: Versions newer than 2.0 are broken in Chrome. Use 2.0 instead. If you need version above 2.0 then remove the "// @require" line. Open the URL on that line. Copy/paste the whole file contents under "var $ = jQuery;".
Inserts a small input box after a list in editing mode. IMDb IDs/URLs will be automatically added to the list. If you input titles the search is automatic but you must select the correct title manually.
To import ratings:
Make sure the format is: rating,imdb id/url/title
You can use the Regexp field to extract titles if your input is in a specific format. If the regexp fails it skips the entry.