I like ...
the casting very much.
Karl Urban's line about darkness and silence.
Simon Pegg's line about the ship being exciting.
the new transporter effect.
the fact that they kept the Red Alert sound.
the way the trailer was cut with the fast scenes toward the end.
the scene with Sarek and Amanda.
the scene when little Spock looks up at the camera.
the shot of the Enterprise under construction.
the look in Chris Pine's eyes when he says to Spock, "Then why don't you stop me?"