There are just two issues I have with it:
1) In the beginning, the echo effects are a little strong on Jar-El's voice, so between that and the background music, it's a little hard to understand what he's saying. But I really like the presentation, with that stirring music that is playing, and Jar-El sounding sort of ghostly. Just tone down the echo a touch.
2) In the trial with Zod, you hear him say "Join us," and then you cut to Jar-El calling down the crystal--it'd be nice if you cut out the "Join us" altogether. It'd be nice to see more of that scene, but it would just make the credits run too long, and just having the "join us" feels a little odd, because we don't actually see Zod say it.
3) The credits run a little long, and the voice overs (like where Lois is freaked out when Superman catchs her) are kind of distracting. You could cut around the part where her mouth is moving, and it would look great with the background music playing, and then cutting to the newspapers without the voice-over from the newspaper editor.
But overall--absolutely fantastic. I can't wait to see what you come up with. Very, very nice job.