this is great! one suggestion would be to update the suggestions under each filter type based on the current search results. for example, say i'm interested in Sean Connery movies. now that i see the results, it'd be nice to further filter the results by rating, director, etc. the directors tab would show all unique directors appearing in the current search result set.

maybe there's a better UX paradigm for this drill-down approach, but i think it would be a great addition.