That actually is another song of theirs off the same "Unplugged in NYC" album. That song is awesome, still gives me the shivers. Wasn't it originally a Bowie song?
Nine Inch Nails - The Becoming you can view the video towards the bottom of this page: http://www.nin.com/visuals/index.html
I was just about to mention Trent Reznor's version of "Hurt" he sang on national tv hurricane relief a few weeks ago. Damn good stuff, even though I don't like NIN.
Yeah, it was a Bowie song. Originally released in 1970 on the album of the same name. Nirvana did a really great job on it.
There is a track on Disc 2 on the Bob Marley Boxset "Songs Of Freedom" called "Acoustic Medley" It must have been recorded for a radio promo. In one 12 minute take he jumps flawlessly through 7 songs. ACOUSTIC MEDLEY: Guava Jelly; This Train; Cornerstone; Comma Comma; Dewdrops; Stir It Up; I'm Hurting Inside