Here's The 'Batman V Superman' Teaser Trailer Everyone's Going Crazy Over

The first "Batman V Superman: Dawn of Justice" teaser trailer has made its way online after premiering at San Diego Comic-Con Saturday.

Director Zack Snyder stepped out during a two-hour Warner Bros.' panel for fans to debut the first footage for the film.

It's not the best quality, but you get a great sense of fan's reactions to the clip.

Check it out below before it's taken down: