Get into the queen's effortless improv during the first verse (:57 - 1:02) - Mariah wanted to let the fans know that there were "so many things" going on with her voice that day before laying down the actual vocals, and then followed by greeting them with a friendly "hey, hey, hey"
3:03 - 3:08 - I'm sure you all remember how Mariah's alter ego Bianca tried to steal the spotlight, but Mimi put the bitch back in her place, which is in the background singing alongside that messy obese chick who always ruins the "bye bye" live performances by screeching during the breakdown @ the end