National Treasure: BOOK OF SECRETS continues to prove box office gold in the U.S. - the sequel is America's number one film for a third successive week. The Nicolas Cage movie took $20.2 million (GBP10.1 million) over the weekend (04-06Jan08), taking its total domestic haul to $171 million (GBP85.5 million). Climbing up a place to two is Will Smith's I Am Legend, which took $16.4 million (GBP8.2 million), while Juno is at three with $16.2 million (GBP8.1 million). Rounding out the top five are Alvin And The Chipmunks and One Missed Call, which took $16 million (GBP8 million) and $13.5 million (GBP6.75 million) respectively.