DC comics and Warner Bros. have been trying to get a ‘Justice League' movie made for at least a decade, and in 2007 they even had the thing cast, but that all went to hell and now 'The Avengers' has made $1.46 billion for Marvel and Disney. Needless to say they're freaking the fuck out.
Christopher Nolan already turned them down, but luckily for them Ben Affleck hasn't, and he's actually a really good director. Variety says...
Affleck is the only candidate who's been sent Will Beall's JUSTICE LEAGUE script, which the GANGSTER SQUAD scribe was hired to write last summer. DC Comics' answer to Marvel's Avengers, JUSTICE LEAGUE is expected to bring together marquee characters Batman and Superman, as well as Green Lantern, Wonder Woman and The Flash. Affleck has made it clear that he's only interested in directing films in which he also stars so its likely that if this pairing ever came to fruition, he would don a suit of his own.
This probably means he would play Batman, because that's the one that was easiest for me to think of just now and you haven't had time to second guess it. So he'll be playing Batman, or "tha Dahhk Knight" according to his Boston accent. Also everyone in the Justice League is useless compared to Superman and Batman. If I call the Super Friends for help and they send Wonder Woman, it better be because I'm having a bikini car wash.