I've only seen this movie once, my freshman year of college in a Film Analysis type class, but the auditorium sound system wasn't working that day, and we were forced to watch it without any sound (or just music I suppose). So 200 kids had to sit there in awkward silence for 2 hours watching this, every cough was distracting, every squeaky chair turned heads. It's really incredible how much music (or lack of) can really change your perception on viewing a film like that.
So all that being said, that experience left a sour taste in my mouth for Metropolis, and I have yet to ever watch it again. But this trailer makes me want to perhaps give it another chance, it actually looks exciting! I'll just make sure the sound on my TV works before I try it again.