Yesterday, 20th Century Fox offered free advance screenings of Titanic, which is returning to theaters with a brand new 3D conversion April 6. Sadly, the sneak previews sold out within hours, which caused several computer servers to crash due to an overwhelming amount of traffic.

The screenings will be held in 50 cities across the country, including Los Angeles, New York, Atlanta, Chicago, and Boston. The sneak previews will be held exclusively in RealD theaters in each of these cities. Fox is also opening This Means War on Valentine's Day, which is odd since studios don't usually like to create their own competition, even though Titanic's screening is a one night only event.

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Back in October, we had a chance to preview 18 minutes of footage from Titanic's new 3D presentation, which looked rather impressive. Director James Cameron and producer Jon Landau have spent the past few years meticulously converting the 1997 2D classic into 3D with the latest and greatest technology at their disposal.

We'll have to wait and see if these free screenings create some positive word of mouth for Titanic before it debuts in 3D April 6.