I consider myself to be a connoisseur of epic music

I'll be listing several so I won't bother making YouTube links, but I believe you should be able to find all of them there if you feel so inclined to look.
They are listed by song title then artist:
~Mosane (and Mosane Pi) -- E.S. Posthumus
~Ghost Love Score -- Nightwish
~B.B. EVOLUTION -- AKHT
~Explosive -- Bond
~Durga -- E.S. Posthumus
(actually, all of the following are E.S. Posthumus until listed otherwise)
~Kuvera
~Menouthis
~Pompeii
~Unstoppable
~Mighty Obstacle -- MoAbi (this one is actually available for free from the artist along with many others, here [http://opus-xero.com/contents/music.html])
~Soldiers of the Wastelands -- Dragonforce
~Beyond the Wasteland -- Nobuo Uematsu
~Cu Chullain -- Karl Jenkins (or Adiemus)
~Chorale VI + Cantus - Song of Aeolus -- Karl Jenkins (or Adiemus)
~Over the Hills and Far Away -- Nightwish
~Pines of Rome (composed by James Levine, from the Fantasia 2000 Soundtrack)
~Reflections of Earth (from the Illuminations fireworks show at EPCOT in Walt Disney World. You may find it in parts, but the whole song is about 9 minutes long.)
~Reel Around the Sun -- Bill Whelan (From Riverdance. There is also a good cover by Twelve Girls Band)
~Freedom -- Twelve Girls Band
~Carnival -- Twelve Girls Band (this one is slow to start, but gets epic after a couple of minutes)
~The Siren -- Nightwish
~The Ballymun Regatta -- Bill Whelan (this one is actually the third part of a song that goes by the name "Timedance '92: Humours Of Barrack Street / Isercleran / The Ballymun Regatta")
~Victory -- Ronan Hardiman (Riverdance again, wait til about a minute in)
And there you have it

I could make the list MUCH longer, but I tried to give you a good sampling of many different artists of mine who are prone to epic music. Good luck!