In the Maiden Voyage section of the museum, one can read the actual testimonies of various people. There were accounts from survivors, notes from the lucky ones who missed the voyage, and even stories from the children who were orphaned by the events. There were also the transcripts of messages the Titanic sent as it sank.
Reading these was a surreal feeling, opening a whole new world of stories better than any movie could possibly envision. At a latter part of the tour, you can even hear the actual voices of the Titanic survivors!