Find out if a film is on iTunes, Amazon Prime, Netflix or Now TV

Searching for Mira Nair

Is Amelia available on iTunes, Amazon Prime, Netflix or Now TV?
Is Monsoon Wedding available on iTunes, Amazon Prime, Netflix or Now TV?
Is Queen of Katwe available on iTunes, Amazon Prime, Netflix or Now TV?
Is The Namesake available on iTunes, Amazon Prime, Netflix or Now TV?
Is The Reluctant Fundamentalist available on iTunes, Amazon Prime, Netflix or Now TV?
Is Vanity Fair available on iTunes, Amazon Prime, Netflix or Now TV?