Oh-so-many. Ed giving Kyle his job back after saying he saw him dying all alone in his dreams and that he couldn't let that happen, Kyle secretly going to visit Ed in hospital, everything about his encounter with Mila, him finally holding the Scarlet Star in his hand and feeling his father's last thoughts, Frank trying not to cry after he gives him the proof he needs to accuse Hugh Speck, the Reagans getting back together and Mrs.Patrice commenting that Tony has changed for the better.
Tony's reaction to Kyle calling him a friend on Christmas Eve. Even more effective if you have Believe on the jukebox.
Kyle looking out the titular Last Window at the end of the game, remembering the Midnight Promise his father had made.