National Treasure: Book of Secrets maintained its vice-like grip over the box office, topping the charts for the third straight weekend with a $20.2 million gross, according to boxofficemojo.com. Will Smith's I Am Legend continued its impressive run with a $16.3 million take, barely edging out Juno for second place. Jason Reitman's teen pregnancy comedy raked in $16.2 million in its first weekend in wide release, averaging a whopping $8428 per theater.
Rounding out the top five were Alvin and the Chipmunks and disappointing newcomer One Missed Call, which grossed $16 million and $13.5 million, respectively.
Source: boxofficemojo.com