I think it's fair to say that my three favorite albums are Who's Next, Born to Run, and Quadrophenia. Mark Judge recently posted a great article on the latter:
Quadrophenia is a work of genius. I am tempted to write that today's music is shallow compared to records like Godspell and Quadrophenia. But that falls into an argument that I disagree with -- that big, ambitious records about Life are always superior to simple pop music. To me, songs about cars and girls are not shallow; rather, the best of them deal with elemental questions of joy, love, and suffering.
Yet it can't be denied: Quadrophenia is on an entirely different level than anything out today.
Indeed. Go read the whole thing.