Ornette Coleman: A Harmolodic Life by John Litweiler was quite good.
So was
Space is the Place: The Life and Times of Sun Ra by John F. Szwed.
I loved
The Carpenters by Ray Coleman, though of course it's tragically sad.
Angie Bowie's revenge shot at her ex-husband
Backstage Pass: Life on the Wild Side with David Bowie is just plain awesome trashy fun.
Hip Hop America by George Nelson does the early days proud.
Of course most on here have probably read
Confusion is Next by Alec Foege but he deserves credit for doing a decent SY biography, though of course it's time for several more chapters. We'll see what Everett True does in his Youth book.