I've never been much of a fan of Superman. Yes, I realize he is supposed to be the great American hero, but he seems too invincible to me. The reason why I love Batman is that he's vulnerable, makes mistakes and has deep issues about being a superhero. I never saw that with Superman (barring several good moments in the second movie). So I wasn't too excited about the movie, even when I saw the first teaser trailer.
But then this trailer comes out and completely changes my viewpoint. I knew that Bryan Singer, who directed the first two X-men films, would do a good job with the Superman mythos. I'm happy that he understands that a superhero isn't a perfect being, but should have issues that we can relate to. That final shot, where Superman grabs onto the wing of a crashing plane and tears it off, is perfect.
Now where's that Watchmen movie we've all been waiting for DC?