Read the books or if you're illiterate wait for the last films to come out.
The movie in which Harry Potter sees Voldemort in a mirror as himself is Harry Potter and the Order of the Phoenix. :)
Yes, he fought the spirit of Voldemort's younger self.
Harry Potter and the Half Blood Prince.
Voldemort or Dumbledore
No, Harry Potter has a near death experience but does not die. The part of Voldemort's soul inside Harry died.
No, Voldemort dies how he dies in the book.
Voldemort came back in the flesh near the end of Harry Potter and the Goblet Of Fire.
You don't why even ask!
voldemort who dies at the end
No, he is controled by Voldemort.
He got it when he was an infant, by Lord Voldemort, when Lord Voldemort killed harry Potter's parents and tried to kill Harry potter but couldn't. Only left a scar on his forehead. Watch the movie.
Yes, Ralph Fiennes played Voldemort in Harry Potter and Hades in Clash of the Titans re-make. He will also return to Wrath of the Titans.