MovieLine: This December 16, Mission: Impossible - Ghost Protocol premieres in IMAX five days in advance of its general release. Why exactly? Probably to encourage fans of the Tom Cruise franchise to see the picture in the large format director Brad Bird intended when he shot thirty minutes-worth of the fourth Ethan Hunt film in IMAX. To convince journalists that the large format is indeed worth higher ticket prices, an advance release date and a little early buzz, Paramount screened about 20 minutes worth of wild action sequences at the Rave 18 theater in Los Angeles last week. Ahead, the stomach-flipping details (and very mild spoilers).