I'll probably go against everyone here and say the Lifestream scene between Cloud and Tifa was my favorite moment in the game. Many people found it boring, but I thought it was a really emotional part, and I liked the moments when Cloud found out the truth about himself, and how he also found himself after being lost and messed up for such a long time. Another favorite part was the long cutscene at the end of Disc 2. That scene had the bittersweet feeling of the final battle being close, and I especially liked the conversation between Cloud and Tifa.