The Abyss is really good. Good adventure and drama. I especially enjoyed Michael Biehn playing an excellent descent into madness. In seeing what the theatrical edition cut out, I can see the extended being more solid. I was still a bit surprised how much the aliens are sort of a background presence in the story. Super important, but not really onscreen until the climax.
Some of the creature effects don't hold up well. This is somewhat in contrast to Close Encounters, which still looks good despite being 10 years older. I suppose Douglas Trumbull is just the best. Still, it's nice to see some of those early computer effects, which don't look too bad.
The music is a bit odd. It seems strange to watch a Cameron film without a Horner score, since I've watched both Titanic and Avatar in the past week. It's still good, but Alan Silvestri just doesn't seem right for Cameron, especially in those moments that were especially Silvestri-like.
Still, really good. It's the best of Cameron's "A" films, and even if it doesn't match up to his best (Titanic and T2) it's probably on par with Terminator for quality. Good times.
(I do wonder if there's some aspect ratio screwup between the DVD, which is pretty old, the player, and my TV. It seemed a little squashed, but I couldn't figure out a way to change it.)