The 10 most popular movies 2009 are the highest grossing films from that year. They range from true stories, to popular franchise movies returning with a new installment. Family friendly movies were big in 2009, as were science fiction films. It was a good year for films because all of the 10 most popular movies 2009 grossed over $200 million at the box office.

  1. "Avatar" The most popular movie of 2009 grossed $749 million that year. The science fiction movie is about a disabled marine named Jake Sully traveling to planet Pandora to ease the natives into submission so that Americans can continue mining there. The popular 2009 movie was written and directed by James Cameron, and is currently the highest grossing movie of all time.

  2. "Transformers: Revenge of the Fallen" The second installment in the "Transformers" franchise is one of the 10 most popular movies 2009. It picks up two years after the first film, at a time when Sam is preparing for college. The plot revolves around Sam and his girlfriend Mikaela once again battling evil Decepticons and fighting for the Transformers.

  3. "Harry Potter and the Half-Blood Prince" The popular movie of 2009 is about the students sixth year at Hogwarts School of Witchcraft. Harry discovers a book in the library which he thinks will lead him closer to Lord Voldemort's past. All of the "Harry Potter" movies have been wildly popular, so it is no surprise the sixth installment was the third highest grossing movie of 2009.

  4. "The Twilight Saga: New Moon" The second installment in the "Twilight" franchise is one of the 10 most popular movies 2009. Bella is heartbroken over her ex-boyfriend Edward leaving town, and she looks for comfort in Jacob. The 2009 movie exposes the werewolf world, and their relationship with vampires.

  5. "Up" The 78-year-old grumpy Carl is settled in his old age, and likes complete privacy. He rigs his house to travel the world, but an unexpected guest foils his solo plans. By accident 8-year-old Russell get taken away on a wild adventure to South America with Carl. The popular 2009 movie shows the unlikely pair forming a bond.

  6. "The Hangover" An out of control bachelor party in Vegas leads to three friends losing the groom. The next morning they retrace their steps to try and find the groom in time for the wedding. The crazy antics the boys got into are out of control hilarious. The popular comedy movie 2009 was such a success that a sequel is being made.

  7. "Star Trek" The early days of Captain Kirk and his team are explained in the popular 2009 movie. The plot revolves around a young Kirk and his team on the starship USS Enterprise. All of the franchise's main characters are represented including, Spock, Chekov, Scotty, and Sulu.

  8. "The Blind Side" One of the 10 most popular movies 2009 is the true story about professional football player Michael Oher's childhood. He came from a broken home, and was taken in by a well-to-do family. The family raised Oher as their own, and helped him succeed in school and football. It's a heartwarming tale that can tug at anyone's heartstrings.

  9. "Alvin and the Chipmunks: The Squeakquel" Alvin, Simon and Theodore are back to create mischief in one of the 10 most popular movies 2009. The chipmunks take time away from the music industry to focus on school. The school's music program is getting cut, so the three chipmunks try to win a battle of the bands to help raise money.

  10. "Sherlock Holmes" London sleuth Sherlock Holmes and Dr. Watson are brought to the big screen in one of the 10 most popular movies 2009. The action-comedy movie follows Holmes and Watson as they battle villainous Blackwood. The 2009 movie did justice to the classic books it's based on.