Just to alert you fine folk to a recent interview Lee did with the BBC. Most of the Sonic Youth related stuff comes towards the end - apparently he mentioned similar stuff in BBC 6 Music interview a couple of weeks ago.
This was broadcast on BBC Radio 5 live a couple of days ago:
http://soundcloud.com/nutsngum/lee-r...onic-youth-bbc
It mentions Sister Demos, a Tour movie from 1986, and he also mentioned footage from a show in the late 80's in London where Iggy Pop came onstage and performed I Wanna Be Yr Dog with them, that they all loved. The last bit was cut out of the interview sadly!