'Fecal Matter' demos
At least we get one <a href="http://www.pitchforkmedia.com/record-reviews/n/nirvana/sliver.shtml">track</a> on the Nirvana 'sliver' (best of the box) release.
Unless yr a completist, I would reccommend just getting the box that came out a year ago (I can't believe its been a year or that I got it for $28 USD - Its upwards of $50 at most places now).