Well, we did get new glimpses of parts of the game we've already seen some of, including scenes from the earliest trailers redone, so that was nice. Barret ranting on the elevator was classic, and the look Cloud and Jessie exchanged was funny, too. Cloud must've been thinking like, "Seriously?" And she's going, "I know... he does this all the time..." Aerith tucking the flower on his shirt was a nice touch, though I wonder what happens if you don't buy one - or if you're even given the option. Tifa is lovely as always, and I liked Cloud's dialogue about him sticking around to help her since she's in a tight spot. It shows he does care despite the way he tries to come across.
And rag on me if you want, but I love the fact that the first time we get to see Cloud give even a hint of a smile, it's at Jessie.