With nearly 937,000 titles on the IMDb it isn't feasible to handpick Recommendations for every film. That's why we came up with a complex formula to suggest titles that fit along with the selected film and, most importantly, let our trusted user base steer those selections. The formula uses factors such as user votes, genre, title, keywords, and, most importantly, user recommendations themselves to generate an automatic response.
We're proud of our system for, if you disagree with a Recommendation for a given title and know of a better one, we encourage you to help us improve the results. Look for the "Update" button or the "Add a Recommendation" link at the bottom of the page and add more relevant (or just plain more) Keywords, or add the titles that you think should be surfacing, and help make Recommends more useful, more appropriate, and more fun.