• October 17, 2007

Disney is launching an online program called "The World's Biggest Treasure Hunt" at Disney.com/NationalTreasure that serves as both a multi-week treasure hunt game as well as the official film Web site for Walt Disney Pictures' and Jerry Bruckheimer Films' "National Treasure: Book of Secrets," starring Nicolas Cage, which opens Dec. 21.

The 10-week site lets users play a variety of online games and see film content. The site dangles a chance to win prizes, including a new Mercedes-Benz filled with treasure, with winners to be announced on "Entertainment Tonight" before the film opens.

Mercedes' C-Class sedan is also featured in a chase scene in the film.

--Karl Greenberg