LOS ANGELES — Audiences spent Thanksgiving with Reese Witherspoon and Vince Vaughn, whose holiday comedy “Four Christmases” took in $31.1 million to open as the top weekend movie. The film opened Wednesday to get a head start on the long weekend.

The top 20 movies at U.S. and Canadian theaters Friday through Sunday, followed by distribution studio, weekend gross, and number of weeks in release, as compiled Monday by Media By Numbers LLC:

1. “Four Christmases,” Warner Bros., $31,069,826, one week.

2. “Bolt,” Disney, $26,581,002, two weeks.

3. “Twilight,” Summit Entertainment, $26,344,032, two weeks.

4. “Quantum of Solace,” Sony, $18,833,552, three weeks.

5. “Australia,” Fox, $14,800,723, one week.

6. “Madagascar: Escape 2 Africa,” Paramount, $14,207,329, four weeks.

7. “Transporter 3,” Lionsgate, $12,063,452, one week.

8. “Role Models,” Universal, $5,191,180, four weeks.

9. “The Boy in the Striped Pajamas,” Miramax, $1,696,187, four weeks.

10. “Milk,” Focus, $1,453,844, one week.

11. “Slumdog Millionaire,” Fox Searchlight, $1,346,039, three weeks.

12. “Changeling,” Universal, $1,207,240, six weeks.

13. “High School Musical 3: Senior Year,” Disney, $1,061,628, six weeks.

14. “The Secret Life of Bees,” Fox Searchlight, $561,671, seven weeks.

15. “Rachel Getting Married,” Sony Pictures Classics, $530,210, nine weeks.

16. “Zack and Miri Make a Porno,” Weinstein Co., $524,425, five weeks.

17. “Soul Men,” MGM, $455,335, four weeks.

18. “Fireproof,” Samuel Goldwyn, $431,787, 10 weeks.

19. “The Dark Knight,” Warner Bros., $343,366, 20 weeks.

20. “Happy-Go-Lucky,” Miramax, $289,208, eight weeks.