Thanks, Tom. And thanks all.
I had already started by purchasing Ziggy, but will now go back and reevaluate. I started with Ziggy instead of Hunky Dory because I doubted I would ever return to an album - more than maybe once - that started with "Changes" because classic rock radio had utterly decimated that song for me. But I will reconsider in light of your suggestions.
With the Hunky Dory exception (Is that the name of a Robert Ludlum book? The Hunky Dory Exception?), I had planned to move chronologically from there, as everyone had made such strong arguments for every album all the way up to Scary Monsters.
As for buying Ziggy, I am so so so happy. There are tracks on there that I am thrilled to discover. "Hang On to Yourself" is amazing.
I'm looking forward to the long road ahead, wending its way through NY clubs, West Berlin, and the distant reaches of outer space.
And the set of Cat People.
-JfM