To no one's surprise, most of my choices are from ice dance
For me, Blues for Klook will always belong to Usova & Zhulin
http://www.youtube.com/watch?v=AxseLaxl61s
Oddly enough, the best Cabaret I ever saw belongs to Chock & Zuerlein last year. Even though they weren't the greatest dancers, the choreo and the whole piece worked for me.
http://www.youtube.com/watch?v=dUav1hj011Q
Scheherazade, Blumberg & Siebert 1984 Olympics
http://www.youtube.com/watch?v=OcmLc_XSp7Y
tied with Midori Ito, NHK
Best Fred & Ginger, Blumberg & Siebert, 1983 Worlds (best representation of tap dance ever on ice. Their timing was wonderful!!)
http://www.youtube.com/watch?v=sWAyYy7XjrI&feature=related
Rahkamo & Kokko, Europeans, Sibelius, Finlandia, Valse Triste (skated in Finland, won first ever ISU dance medal for Finland
http://www.youtube.com/watch?v=rk2LqLNPelc
Rahkamo & Kokko, Best La Strada
http://www.youtube.com/watch?v=KopcVIyZe_w
Best Cabaret, curiously, Chock & Zuerlein 2011 worlds, their last performance as a team
http://www.youtube.com/watch?v=dUav1hj011Q
Virtue & Moir, best Umbrellas of Cherbourg (Mahler is not a war horse, but if it were, they owned that one too)
http://www.youtube.com/watch?v=GBVli-xfJK0
Davis & White, best Samson and Delilah, 2009
http://www.youtube.com/watch?v=S65MXD3XHvQ
Davis & White, best Die Fledermaus 2011
http://www.youtube.com/watch?v=TvF5bIfB2kA
Grishuk & Platov 1997 Europeans, best The Feeling Begins, tied with Michelle Kwan 2003 worlds SP
http://www.youtube.com/watch?v=aLmywlzRkv0
Klimova & Ponamarenko Best Bach Toccata & Fugue 1992 Olympics
http://www.youtube.com/watch?v=kl-niom1jc8
Torvill & Dean best Bolero 1984 olympics
http://www.youtube.com/watch?v=E8obUdxnTlc
Torvill & Dean best Paso Doble (I usually misidentify this music--is it Capriccio Espagnole?) 1984 Europeans
http://www.youtube.com/watch?v=IwXTYlsynM8
Best Chaplin routine 1984 Worlds, Barber & Slater
http://www.youtube.com/watch?v=JR6A_uMU0mI
Best Ave Maria, Yankowskas & Coughlin, US Nationals 2011
http://www.youtube.com/watch?v=incIOswvkv0
Best Carmen, Krylova & Ovsiannakov 1998
http://www.youtube.com/watch?v=-oFAnymw0YU
Best Two Guitars, Wachsman & Waggoner, 1988
http://www.youtube.com/watch?v=8g62Jv9YnuE
Best Firebird, Watson & Oppegard 1987
http://www.youtube.com/watch?v=2vyBwlCQb-w
Best Swan Lake, Rudy Galindo 1996
http://www.youtube.com/watch?v=0lH9mg_ZneA
Pagliacci, Toller Cranston
http://www.youtube.com/watch?v=5NyCTKltCe0#t=3m10s
Casablanca, Kurt Browning, 1994
http://www.youtube.com/watch?v=2SxtqOEi6og
Les Patineurs, Brian Boitano
http://www.youtube.com/watch?v=ah3Fmy7hAn0#t=0m30s
Swing, Swing, Swing , Brian Orser, 1988, Olympics
http://www.youtube.com/watch?v=QSCr-A8T5qQ
Don Quixote, John Curry 1976 Olympics
http://www.youtube.com/watch?v=z79TMsYRnEc&feature=related
Impossible Dream, Pang & Tong (Man of La Mancha)
http://www.youtube.com/watch?v=aTY0xL5iHU8
Best Turandot, Shen & Zhao 2003
http://www.youtube.com/watch?v=5cz6r2XE8N0