WIRED has an interesting recent article on neuroscientific advancements in our understanding of Body Integrity Identity Disorder. Richard Chappell (a graduate student in philosophy at Princeton) has posted an insightful commentary over at his blog Philosophy, et cetera. For more on B.I.I.D, check out Tim Bayne and Neil Levy's "Amputees by Choice: B.I.I.D. and the Ethics of Amputation."