Probably the album that made the biggest impression on me, got me into prog rock and still sounds amazing even now, almost three decades later. Never equalled, never surpassed. A classic in every sense.
A very dark album, to be honest: not much in the way of uplifting songs on it, other than maybe "Garden party", but deep, thoughtful, insightful and full of sharp satirical jabs at everything from high society to sectarian conflict. Definitely deserves a place in anyone's top ten albums.