An essential appositive phrase is underlined in the following sentence: "The movie, Remember the Titans, is an inspiring movied based on a true story". An appositive is a noun or pronoun placed closed to another noun or pronoun to provide more information about that word or to identify it. It can either be essential or non-essential. The first ones are needed to make the sentence clear and the second ones add information which is already clear. In this case, if the title of the movie was removed, it could not be possible to identify which movie the speaker is referring to.