I've rewatched all the trailers again. If you'd asked me a few days ago, I'd probably have went with one of the more action-packed ones, but now? It's the trailer with the party scene. Partly because, as trailers go, it actually tells us quite a bit about the main characters.
We get to meet Lex here. And we see that he's not the suave, bald real-estate-obsessed-villain that we've seen in all previous Superman films. He's actually a bit hippy looking, a bit hyper and manic, and seems like a very nice guy "....I LOVE bringing people together!". Of course, we all know that no matter what incarnation of Lex from the comics or TV or films you happen to favour, he's not a very nice guy at all. So instantly we know this is all a front; a facade, a faux public persona. And this Lex has to be a very good liar to maintain that charade whilst fronting a huge global corporation.
And we finally get to see Superman/Kal-El for an extended period in his Clark-Kent-reporter guise. And he's not bumbling, or clumsy, or nervous and naive. In fact, he's quite the opposite; stoic, direct, upright and sincere. He's a human version of his alter ego. And it shows that Superman doesn't have to resort to theatrics to maintain his Clark Kent persona; he can play it close to his true nature, but channel it through the career he maintains.
And finally, we get to see Bruce Wayne. In the '89 films, he was a somewhat eccentric and isolated millionaire; in Nolan's films, his public persona was that of a drunken playboy who burnt down his own mansion by accident. In this short clip, we see that this Bruce Wayne is a very angry and intense man. When Clark questions him on the Batman, he makes no effort to hide his true feelings, as Bale did in Batman Begins when questioned on the same topic ........... ".... a guy who dresses up like a bat ........ clearly has issues". Affleck's version comes right out and tells Clark what he thinks; that Superman is a menace who can 'burn the whole place down'. This Bruce Wayne seems to be so full of anger and resentment that he struggles to hide it and his true feelings run close to the surface.
