I would consider Epic meaning, (an epic) scope.
Wiki:
Epics in this sense are majestic depictions that capture impressive struggles, such as stories of war, adventures, and other efforts of great scope and size over long periods of time.
Anime: Summer Wars, Eva 1 (and 2: watched it subbed, absolutely amazing), GITS SAS (as epic as it gets), Fullmetal Alchemist (first series, not watched much of 2nd yet - waiting for it to end), Kurau.
Movies: LoTR, Matrix (3rd one is really bad though), Dark Knight or anything else by Christipher Nolan - epic or not he can tell a story - Inception looks and sounds EPIC (love the trailer music) which is out in a several weeks time.