Why can't these categories just be available thru their UI?
The codes are actually Netflix's way of categorizing movies into various sub-genres, which it then uses to surface suggestions for subscribers. But if you're willing to do a little manual labor, the payoff can be pretty big.
"We categorize our content into thousands of subgenres to help match the right content to the right member based on their viewing history," Netflix spokesperson Marlee Tart told Mashable.
To view the categories, go to http://www.netflix.com/browse/genre/ and enter the category code (listed below) at the end of the URL (example: http://www.netflix.com/browse/genre/2676).