Letterboxd - Letterboxd is a social site for sharing your taste in film, now in public beta.
TasteDive - TasteDive recommends similar music (musicians, bands), movies, TV shows, books, authors and games, based on what you like.
TMDB - free movie database
Taste - Get movie suggestions based on personal taste.
Find Me Similar - Find similar game, movie and anime recommendations based on your favorites. Browse our games, movies and anime recommendations pages for more.
MovieLens - MovieLens helps you find non-commercial, personalized movie recommendations.