*1. The Mummy: Tomb of the Dragon Emperor ** (PG-13).

2. The Dark Knight ***1/2 (PG-13).

*3. Traitor **1/2 (PG-13).

*4. Mamma Mia! ** (PG-13).

5. Wanted **1/2 (R).

6. Step Brothers *** (R).

*7. The House Bunny ** (PG-13).

8. Hancock ***1/2 (PG).

9. Horton Hears a Who ***1/2 (G).

*10. Burn After Reading *** (R).

*New this week. Stars indicate ratings from Inquirer reviewers. Movies without stars were not reviewed by The Inquirer. Top titles at U.S. Blockbuster stores for week ended Dec. 21.