I found it very hard to do long programs, because I have loved so many! I refuse to rank these, but I will keep it down to 10. I am deliberately skipping others I love because they have been mentioned by many others.
Torvill & Dean, 1982 Europeans, FD Mack and Mabel
https://www.youtube.com/watch?v=8aEgunvUYVg
Davis & White 2008 Skate Canada FD Samson & Delilah
https://www.youtube.com/watch?v=cavcCtIVurk
Krylova & Ovsiannakov 1998 Olympics FD Carmen
https://www.youtube.com/watch?v=JgXUkYCbAgk
Wilson & McCall 1988 Olympics FD Elite Syncopations
https://www.youtube.com/watch?v=GWO4eG_EwG8
Rudi Galindo 1996 Nationals FS Swan Lake. Best ever Baron Rothbart
https://www.youtube.com/watch?v=0lH9mg_ZneA
Brian Boitano 1988 Olympics FS Napoleon
https://www.youtube.com/watch?v=z8p3EhqI94s
Daisuke Takahashi 2012 Worlds FS Blues for Klook
https://www.youtube.com/watch?v=0EBx7zfN-Uo
John Curry 1976 Olympics FS Don Quixote
https://www.youtube.com/watch?v=4LpULZwvjcA
Elaine Zayak 1981 Worlds FS
That closing double axel -triple toe combination sequence in the final seconds!! Incredible. Worth watching for it alone. This is 1981 people
https://www.youtube.com/watch?v=ZdHorxKW-mw
Midori Ito 1988 Olympics FS Le Corsaire
https://www.youtube.com/watch?v=L609BnXwz3I
Shen & Zhao 2003 Worlds FS Turandot
https://www.youtube.com/watch?v=rEfR8ikAQ_g
Berezhnaya & Sikuradlidze 2001 Cup of Russia FS Chaplin
https://www.youtube.com/watch?v=ZpbTftcW9jY
James & Cipres 2018 Skate Canada FS Wicked Games
https://www.youtube.com/watch?v=6u09pLTv3m4