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

Searching for George Lucas

Is American Graffiti available on iTunes, Amazon Prime, Netflix or Now TV?
Is Drew: The Man Behind the Poster available on iTunes, Amazon Prime, Netflix or Now TV?
Is Empire of Dreams: The Story of the 'Star Wars' Trilogy available on iTunes, Amazon Prime, Netflix or Now TV?
Is Star Wars: Episode I - The Phantom Menace available on iTunes, Amazon Prime, Netflix or Now TV?
Is Star Wars: Episode II - Attack of the Clones available on iTunes, Amazon Prime, Netflix or Now TV?
Is Star Wars: Episode III - Revenge of the Sith available on iTunes, Amazon Prime, Netflix or Now TV?
Is Star Wars: Episode IV - A New Hope available on iTunes, Amazon Prime, Netflix or Now TV?
Is Star Wars: The Legacy Revealed available on iTunes, Amazon Prime, Netflix or Now TV?
Is The People vs. George Lucas available on iTunes, Amazon Prime, Netflix or Now TV?
Is THX 1138 available on iTunes, Amazon Prime, Netflix or Now TV?