I enjoyed the movie. I believe they kept enough of the original story of the show for the audience to get the point. M. Night did change the prononciation of some of the names to make them the Asian prononciations because the show is based on Asian cultures and martial arts. He also did originaly have the Kyoshi warriors in the movie but had to cut them because of time restraints. The changes are minimal and the story works, my son and I are loyal to the Last Airbender cartoon and we are very pleased.
I thought that Harry Potter and the Half Blood Prince was as overall great movie. A good blend between the seriousness of a world in fear of Voldemort and his deatheaters and the comedic aspects of Hogwarts school life and teenage romance. The movie moved a little too quickly for me at some parts but overall I enjoyed it.