6. Batman Begins
If Batman was the superhero movie genre's first step towards modernity, Batman Begins was its second phase; the one that became the definitive example of modern DC movie. Dark, broody, and grounded; all of which it pulled off to perfection.
The Christopher Nolan movie gets a lot of credit for saving the franchise after Batman and Robin took it off-track, but that shouldn't undermine the credit it deserves for what it is: A damn good movie. The first in Nolan's trilogy, Begins doesn't dance around Batman's origins, it goes all in on them, showcasing how billionaire Bruce Wayne eventually found his way to crime-fighting after a lifetime of grief, tragedy, pain, and perseverance.
Christian Bale played the Dark Knight and he quickly etched his name among the greats to portray the character (and that was before his even finer work in The Dark Knight). He gives us a picture of a much more nuanced Batman than before and that ultimately serves the story well, as Bruce battles for the soul of Gotham City with a man he thought wanted to help him save it.
Batman Begins was a triumph for the ages. It brought the Caped Crusader back to the big screen and gave him an incredibley talented, star-studded ensemble cast to support him on that journey. From the grounded portrayal of his backstory to the somewhat more supernatural elements the movie possesses, it felt like an adaptation of one of Batman's most beloved comic book storylines. That's how loyal to the source material it was. It was also just an all-around cracking movie that told its story to perfection.