The Wall, Animals, and Wish You Were Here by Pink Floyd
Moving Pictures by Rush
Metropolis Part II, 6 Degrees of Inner Turbulence and the Recovery songs (Mirror, Lie, Glass Prison, This Dying Soul, and The Root of All Evil) by Dream Theater
Dirt by Alice in Chains
Songs Inspired by Lord of the Rings - Mostly Autumn
Southern Rock Opera - Drive By Truckers
Tommy and Quadrophenia - The Who