My Favorite Scenes:
Aladdin- Never had a Friend like me, A whole New World, Aladdin Abu and Carpet escaping from the Cave of Wonders.
Peter Pan- Tinkerbell checking herself out on the mirror, You can Fly, Mermaid Lagoon, The Indian scene, the ending scene where Hooks ship flys away from Neverland.
Beauty and the Beast- The opening song "Belle", Be our Guest, The Ball room scene of course, Beasts Transformation, the ending chorus Beauty and the Beast.
The Little Mermaid- The begining titles, Ariel diving towards Erics ship, Part of your World Reprise, Ariels Transformation, Eric throwing the flute into the ocean and decides to go after Ariel.
Alice in Wonderland-The Begining titles, Down the Rabbit hole, The Cheshire Cat scene "Twas Brillig and the Slithey toves, did gyre and gimble in the wabe. All mimsey were the borogoves and the mome raths outgrabe." The Mad Tea Party.
The Lion King- Elephant Graveyard, Hakuna Matata, Can you Feel the love tonight, The scene where Timon does the Hula dance.
Other scenes I like from other great Disney movies:
Snow White and the Seven Dwarfs- Snow White singing in the well, Dwarfs working in the mines, The wake up kiss.
Pinnochio-Pinocchio awakening, Pinocchio becoming a real boy.
Cinderella- Cinderella's Transformation, The Ball Room scene, Cinderella running away at the stroke of midnight.
Lady and the Tramp- Bella Note.
Sleeping Beauty- Once upon a dream, the wake up kiss, Maleficants creepy speach.
Of course there are a lot of other classic Disney moments and scenes but these are the ones that always stick out to me the most.