I saw this documentary on the A Night to Remember DVD, and finding it fascinating and informative, I thoroughly enjoyed it.
The documentary puts into perspective the effort that went into the making of ANTR, and shows that the film was indeed a landmark movie of British cinema, which went to great lengths to tell the story of the Titanic. It also features extensive interviews with those involved in the production; and as they are now dead, this documentary is an invaluable source of fascinating information.
There is plenty of titillating trivia to keep you amused, and the explanations of how the special effects were achieved in those times provides a wealth of information for fans of a Night to Remember, and of old time film-making in general.
The documentary presents all this information in a very clear and concise way, and as such it will be invaluable for anyone even with the smallest passing interest in the Titanic, film-making, or just history in general.
It is worth buying the ANTR DVD simply for the presence of this documentary alone.