Below you will find links to specific filmographies and various search engines dedicated to film-making and cinema.
Nanocrowd. It’s a discovery engine rather than a search engine though. Simply type in a film/actor/director that you like, and Nanocrowd will attempt to find others that you like.
MyFilmz Type in a movie name that you like and get recommendations. Add your own favourites as well, and tag them
The last three sites above courtesy of Phil Bradley’s ‘I Want To’ site