Every movie based on DC Comics, ranked

Milly Alcock at the "Supergirl" world premiere on June 22. Dimitrios Kambouris/Getty Images for Warner Bros. Pictures There have been 56 movies based on characters from DC Comics. They range from all-timers like "The Dark Knight" to stinkers like "Catwoman." The most recent DC film, "Superman," is closer to all-timer status. "Supergirl," the second offering from DC Studios, is out in the world. So, is it any good? If you listen to critics, the answer is a resounding … meh. Of course, while...