Alright, I just finished the DLC, and I personally though it was great. It was very spooky and ominous, especially that scene where the first leviathan rose out of the pit. And when they influenced the Reaper to crash into the water.... wow. Chilling.

Anyways, after reading some of the posts here, I just wanted to say that it's rather early to declare that this proved/disproved IT. It's still fresh in our minds, and it's rather hard to accurately gauge the impact of things like this immediately after seeing/playing through it. Remember EC and how it caused many ITers to think IT had been disproven? And how, after looking at it some more later, we found out that it actually strengthened IT a great deal?
Secondly... what's with all the feeding of the trolls? Haven't we learned better than that by now? And yes, I called them trolls, because they came on this thread solely to insist that we're delusional, Levithan OBVIOUSLY completely destroyed IT, and oh yeah, that piece of really old evidence makes no sense and we should totally argue about that instead of discussing Leviathan.
Seriously? Can we stop talking about how Shepard is immune to indoctrination or how he never shows any signs of it? AGAIN?!?
On a different note, has anyone been able to go through the endings again with the Leviathan and see all the changes?