Ryan Gosling, Max Martini, Gerald Butler, Joe Manganiello and Richard Armitage are on WB's shortlist for the new Batman with Josh Brolin as the rumored frontrunner.
Snyder reportedly wants an older, grizzled and experienced Dark Knight for the Superman vs. Batman project (as the casting list denotes).
Online, fans are unianimously behind such actors such as: Anson Mount, Jensen Ackles, Michael Fassbender, Jon Hamm and especially Karl Urban.
So...what working actor would you choose to don the cowl for the Batman/Superman throwdown? I would choose Benedict Cumberbatch or Thomas Jane, personally. Batman needs an iconic, gravelly voice, world-weariness and powerful screen presence which either actor would provide in spades.