It is not befitting to (the majesty of) Allah that He should beget a son. Glory be to Him! when He determines a matter, He only says to it, "Be", and it is. (019.035)
O People of the Book! Commit no excesses in your religion: Nor say of Allah aught but the truth. Christ Jesus the son of Mary was (no more than) a messenger of Allah, and His Word, which He bestowed on Mary, and a spirit proceeding from Him: so believe in Allah and His messengers. Say not "Trinity" : desist: it will be better for you: for Allah is one Allah: Glory be to Him: (far exalted is He) above having a son. To Him belong all things in the heavens and on earth. And enough is Allah as a Disposer of affairs. (004.171)
In blasphemy indeed are those that say that Allah is Christ the son of Mary. Say: "Who then hath the least power against Allah, if His will were to destroy Christ the son of Mary, his mother, and all every - one that is on the earth? For to Allah belongeth the dominion of the heavens and the earth, and all that is between. He createth what He pleaseth. For Allah hath power over all things." (005.017)
Christ the son of Mary was no more than a messenger; many were the messengers that passed away before him. His mother was a woman of truth. They had both to eat their (daily) food. See how Allah doth make His signs clear to them; yet see in what ways they are deluded away from the truth! (005.075)
They say: "Allah hath begotten a son" :Glory be to Him.-Nay, to Him belongs all that is in the heavens and on earth: everything renders worship to Him. ( 002.116)
According to christian doctrine, Jesus (peace be upon him) did not marry anyone. Quran does not say anything about his marriage, so either case should be fine to muslims.
Besides the movie, there are already many groups among christianity which do not believe in his divinity like Unitarians. No muslim is a muslim if he does not believe in Jesus (Peace be upon him). According to muslims, he was one of the mightiest messengers of God, but not His son.
Like the violent protests of muslims against the caricatures of Prophet Muhammad (peace be upon him) - which I totally oppose - muslims should show patience. It is Allah who makes Truth clear from falsehood, not us.
Soon will We show them our Signs in the (furthest) regions (of the earth), and in their own souls, until it becomes manifest to them that this is the Truth. Is it not enough that thy Lord doth witness all things? (041.053)