A movie that I will never be able to forget is The Lord of the Rings - Fellowship of the ring. I love that movie from the music, plot, adventure, characters, etc. It is something I will remember and revisit throughout my life.
As for books - The 48 Laws of Power sticks with me to this day. I have watched the principles play out in my life before my eyes, and I love the historical backdrops that are provided with each of the principles.