Share the music you like! I'll start with this: Dvorak - Symphony No. 9 from "The New World" - YouTube - Dvorak - Symphony No. 9 From the New World - 4th movement
Another wonderful piece that everyone should know: Edvard Grieg - In the Hall of the Mountain King - YouTube - In the Hall of the Mountain King (Peer Gynt) by Edvard Grieg
Somewhat less epic but still enjoyable from time to time: Wolfgang Amadeus Mozart - Turkish March - YouTube - Massimiliano Ferrati plays Mozart "Turkish March"
Stunning to hear: Nikolai Rimsky-Korsakov - Flight of the Bumblebee - YouTube - Flight of the bumblebee
It's hard to classify this as classical music, but I'll mention it anyway: Karl Jenkins - Palladio - YouTube - Palladio
Another classical classic everyone has heard at least once: Guiseppe Verdi - Triumpham March (from Aida) - YouTube - Triumphal March from Aida
Because somehow it reminds me of beer =p YouTube - Lego Beer Song but more because it's catchy. Georges Bizet - Carmen - Ouverture - YouTube - Carmen - Ouverture
Prokoviev 5th Symphony
Thanks for sharing that one with us. Here's another one: Sir Edward Elgar - Elgar, Pomp and Circumstance March No.1 - YouTube - Elgar, Pomp and Circumstance March No.1 Inside this one you might recognise "Land of Hope and Glory" (YouTube - Land of Hope and Glory - Last Night of the Proms 07). Superb!
One of my personal favorites: Glenn Gould - Bach French Suite No. 5 in G Major, BWV 816 - YouTube