Haven't read it yet, but this looks interesting: David Brown's Goodbye 20th Century: A Biography of Sonic Youth [amazon link]. From the Huffington Post review:

Browne digs deeply into the band's democratic decision-making process, which gives each distinct personality ample voice. As with any band, tensions do inevitably arise, but disagreements here don't last long. Maybe it's because the members of Sonic Youth are so unwaveringly likable. And they're all characters in their own right: Thurston Moore's continuous joking; Kim Gordon's focused creative input and reserved demeanor; Lee Renaldo's technical prowess; and Steve Shelley's stabilizing influence. It's almost impossible to hate the underachievers now crowned by many as the kings of rock. (Former-Voice critic Robert Christgau called Sonic Youth "the best band in the universe" only a few years ago).

(I feel like I should have heard about this from somewhere way cooler than Huffington Post, but I guess that's my world now.)

[via Huffington Post]