1. Batman - Chris Pine
Without a doubt, the biggest decision Warner Bros./DC need to make. I am going completely left field here and choosing Mr. James T. Spock himself, Chris Pine. While he might look a little bit young for the role of the Dark Knight, by the time the Justice League movie rolls around, and more importantly, the Batman reboot in 2016, Pine will be 34 and 35 respectively. He's a controversial choice, but then again, Batman fans only need look back at the criticism of Heath Ledger's casting to see that sometimes, controversial works. Pine has the playboy looks of Bruce Wayne, he's the right height to star beside Henry Cavill and he has also shown his physical ability in Star Trek. He would have to bulk up, but that's an easily rectified issue - just look at Chris Evans transformation for Captain America. Chris Pine is one of Hollywood's emerging stars, and with the release of Star Trek Into Darkness, he's about to return to the spotlight with a bang. DC should snap him up as quick as possible.
Notable Mentions: Karl Urban, Jon Hamm, Joe ManganielloLike this list? How would you cast the Justice League? Let us know below.