Konsensus App - The all-in-one social network for movie and TV show lovers.
Gusta - Get recommendations for any topic: music food movies +
Trakt.tv - Automatically track TV shows & movies you're watching.
Televisor - Find me a show to watch like... (Pandora for TV)
Affimity - A social network with interest-specific channels, like on TV
What to Watch - A movie and tv-show recommendation engine