The Weekend Australian have twenty double inseason film passes to see 'Zero Dark Thirty'. For the chance to win a double pass, tell us in 15 words or less, what is your favourite film based on a true story?

To enter this competition, SMS A02, your answer, name and address to 19911022. All entries must be within 160 characters (including spaces). Comp closes on 28/01/13 at 12.01 am.