In this weekend's box office battle between youth and age, age pulled an upset victory. Newly-minted 18-year-old action star Alex Pettyfer was widely expected to take the weekend with aliens-on-the-run spectacle 'I Am Number Four,' but the victory went to 58-year-old serious-thespian-turned-action star Liam Neeson, whose 'Unknown' debuted at No. 1 with an estimated $25.6 million over the four-day weekend.

'Unknown' was successfully marketed as an international thriller similar to 'Taken,' Neeson's hit from this time two years ago. That movie enjoyed a three-day opening of $24.7 million, and 'Unknown' was in the same ballpark, with $21.8 million from Friday to Sunday. And Neeson's age-appeal was no small reason for 'Unknown's' success. Studio research indicated that a full 54 percent of the film's audience was over 50.
I Am Number Four Movie Poster
I Am Number Four
PG-132011
Based on 30 critics

John Smith (Alex Pettyfer) seems like an ordinary teenager, but he is an alien on the run from merciless... Read More

Unknown Movie Poster
Unknown
PG-132011
Based on 38 critics

After a serious car accident in Berlin, Dr. Martin Harris (Liam Neeson) awakes to find his world in utter... Read More

Big Mommas: Like Father, Like Son Movie Poster
Big Mommas: Like Father, Like Son
PG-132011
Based on 14 critics

After stepson Trent (Brandon T. Jackson) witnesses a murder, FBI agent Malcolm Turner (Martin Lawrence)... Read More