I thought the leaked trailer was actually pretty disappointing, wasn't action-y enough for me. I hope to hell the whole movie isn't just them bitching at each other. That'd suck.
EDIT: Batman vs Superman looks freakin amazing. I'd kind of like to know how the hell they can fit all that into a movie though. I felt like Man of Steel could have done with being another hour longer with all the back story and character development that was not delved into enough.