After Unbreakable, he began to go insane and have a blurred perception between reality and film. This explains why his parts in his movies gradually became bigger. After Signs, Shyamalan decided to turn his life into a movie about a director who is trying to reclaim his mojo. The good news is that The Last Airbender was the part of the movie where all hope seems lost, so he will make a good movie again. The bad news is that after M. Night Shyamalan makes a good movie, there will be a plot twist. For all we know, M. Night Shyamalan might reveal himself to be The Cthulhu.