Hey :) I just joined so that means that I get to play catch up :) Off the top of my head, here are some things that I've read recently:

David Hajdu - Positively 4th street ( a snapshot of bob dylan, joan and mimi baez, and richard farina from about the time that folk broke to about the time that farina died )

martha tod dudman - augusta Gone ( a mothers memoir of her daughter's rebellion )

Kathy Dobie - the only girl in the car ( a daughter's take on how things can spin out of control )

Janna Levin - How the universe got its spots ( ok, sure, this is equal parts cosmology and biography, but try to tease the parts out... )

Karl Sabbagh - A rum affair: the true story of botanical fraud ( John Heslop Harrison was a bad bad...er....botanist? )

Chandler Burr - The Emporor of Scent ( about a funky scientist with a prodigal sense of smell and a keen interest in perfum and the science of smell )

Dobie, Levin, and Burr were really engrossing. The rest were fun, butnot quite as good.