I unexpectedly
loved Cloverfield ... but posted more in detail about that it the, er, Cloverfield thread.
As for the Star Trek trailer ...I got the impresison it was not footage from the film, but simply a teaser for teaser purposes only (because, yeah, building the Enterprise on a planet's surface would be insanely stupid and would not "fly" - heheh - with Star Trek fans.) Um, the teaser got a tepid reaction from the mega-excited, J.J. Abrams-loving, fanboy audience at the Chinese. Not good.
But I appreciated that it didn't seem like "real" movie footage, though maybe I am wrong. Although the Cloverfield teaser really hooked me, it was real footage of one of the highlights of the movie ... which was then less exciting than it could have been when I finally saw it in the context of the film. Oh well. Still loved it.