After three weeks, National Treasure 2: Book of Secrets remains in the top spot at the box office with an estimated $20.2 million this weekend.

At this point the sequel is a measly $2 mil short of the total domestic gross of the original movie with $171 million. It’s also on the brink of being the biggest movie ever for Nicolas Cage.

In the first weekend in 2008, only one movie had a wide release, One Missed Call. The movie wasn’t screened for critics, but the 36 reviews so far on Rotten Tomatoes give it a total score of 0%. Every single one is a negative review, that’s impressive. It made $13.5 million, which means a fitting fifth place finish for a weak start to the new year.

Juno is in its fifth weekend and expanded to about 2000 screens. The movie more than held its own against studio heavyweights (playing in twice the locations), making an estimated $16.2 million. With actual numbers tomorrow, it might even make the jump to second place. I don’t want to sound repetitive, but if you haven’t seen this movie yet you really need to.

I Am Legend jumped back to second place after falling last week to Alvin and the Chipmunks, which finished fourth. They made $16.3 million and $16 million, respectively.

Even though Charlie Wilson’s War seems to be well-received, it dropped to sixth with $8.2 million and has only made a total of $52.6 million. A good number if it hadn’t cost $75 million to make.

Atonement made it back into the top ten, a great accomplishment for a movie only on 583 screens. It made $5.1 million. I guess it helps when you get the most Golden Globe nominations.

Here’s your first chart of the new year:
1. National Treasure: Book of Secrets $20.2 million
2. I Am Legend $16.3 million
3. Juno $16.2 million
4. Alvin and the Chipmunks $16 million
5. One Missed Call $13.5 million
6. Charlie Wilson’s War $8.2 million
7. P.S. I Love You $8 million
8. The Water Horse: Legend of the Deep $6.3 million
9. Sweeney Todd: The Demon Barber of Fleet Street $5.4 million
10. Atonement $5.1 million