I just got back from seeing it.
I thought it was pretty amazing. The 3D feel made it more realistic..I was still on the edge of my seat even after seeing it a million times, I got chills while the ship was going down.
And at the end of course while the credits were playing, "My Heart Will Go On" brought me to tears.
I saw this today. I'd never watched Titanic before but wow what an amazing film. I laughed, I cried (5 times-no exxageration). I always thought it didn't look that good and was against seeing it but boy was I wrong. Definately one of the top 5 films I've ever watched.