There were three movies by one Peter Jackson recently .....
That said, most modern fantasy is to some degree a 'rip off' of Tolkien, usually because
a) the writer is ripping off Tolkien to make a quick buck, b) the writer is such a fan of Tolkien that his work overwhelms their imagination & they can only produce something 'similar', c) Tolkien created an expectation that fantasy novels/worlds will work in a certain way & contain certain races, places & themes & writers produce what readers want.
Interesting piece
here (thanks to Lirimaer over on the Plaza for the link)