Walk-on role in HBP up for grabs

British Harry Potter fans are now being offered a once-in-a-lifetime opportunity: a walk-on role in the sixth movie, Harry Potter and the Half-Blood Prince. In order to participate, fans must answer questions about the book series on MSN's website from now until December 20. New questions will appear each week.

MSN entertainment manager Mike Lok said: "We're so excited about being able to offer this amazing prize to one Harry Potter fan. This really will make someone's Christmas dreams come true. Needless to say, we expect this to be a highly-contested competition."

Best of luck to all contenders!