For a bizarre, visually arresting trailer, check out Sin City. I'm not sure it's even a good idea for a comic book movie to look so literally like the art of the comic book, but it sure looks neat. My concern is that it detracts from the story standing on its own as a movie, that the whole time you're watching this you're thinking, "oh, it's a comic book," when if you want a comic book experience maybe you should just read a damn comic book.
I had the same problem with the stupid split-screen gimmick in Hulk. Simultaneity of action was unimportant to the story, unlike something like 24 or Phone Booth where unity of time is integral to the concept. So it was just there to suggest a comic book. Yes, superficially, when you look at a comic book you see lots of boxes with pictures in them. But that doesn't mean that's what we should see when we're looking at a movie of a comic book. The boxes aren't a conscious part of the storytelling experience. When you make a movie out of a novel you don't make a point of putting a lot of written text on the screen. That's just part of the medium, and drawing attention to it is insulting and demeaning to the source material, like you're treating comic books as some second-class source. And it takes you out of the movie.
Not to mention, that's not even how comic book panels are used. Comic panels are (usually) used for sequential action, not simultaneous action, so split-screen action juxtaposing simultaneous scenes is decidedly un-comic like. And don't even get me started on the amateurish wipes. The thing looks like it was put together with a kid playing with iMovie for the first time.
Okay, that was a tangent. Sin City could be okay. I like Frank Miller (Batman: Year One and Dark Knight Returns, though not Dark Knight Strikes Again), and for some reason I like Robert Rodriguez. I've liked aspects of many of his movies, although there's none I can embrace fully. I do like his bare bones Do-It-Yourself filmmaking philosophy though. And Sin City, again, looks quite cool, though I have my doubts about whether it will hold up for a whole movie.
I meant to also call attention to the trailer for The Pink Panther, featuring Steve Martin as Inspector Clouseau. It's pretty dumb, but the slapstick and bad French accents are well done. People falling down or getting hit with things almost always works for me. Plus, Jean Reno is funny in it. That first pin joke makes me cringe, though.