As everyone here knows, Wilco and Jeff Tweedy are among my favorites. One reason, I think, is that Tweedy himself certainly appears to be an interesting and complex person. If you rent the dvd Sunken Treasure not only do you hear some great acoustic guitar work, but you get a glimpse into his personality.
I knew he had a problem with prescription drugs and knew that A Ghost is Born came out of much of that experience (just about my favorite song "Handshake Drugs" comes from that album) but didn't know much behind that. In this interesting NYT blog post, Tweedy explains his battle with migraines and panic attacks. Not only does it explain some of the songs on that album (read the post) but it is a great example of introspection and brutal self-honesty.