Producer J.J. Abrams has posted online an extended clip from his upcoming monster film Cloverfield.

If you've been wondering what the super-secret movie is all about, click the player below to watch a multi-minute clip from the film ... pretty cool actually!

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In the film, five young New Yorkers throw their friend a going-away party the night that a monster the size of a skyscraper descends upon the city. Told from the point of view of their video camera, the film is a document of their attempt to survive the most surreal, horrifying event of their lives.

Cloverfield arrives in theatres on January 18