Most of Ulver's pieces have an epic feel to them.
Sigur Ros, overall.
Porcupine Tree's "In Absentia" album.
Opeth retains some Epic qualities, moreso on "Damnation" and "Deliverance".
Some Isis.
Older Mortiis.
Green Carnation.
GoRABpeed You! Black Emperor.
Emperor, in their own way.
Dredg.
Burzum, in their own way.