Yeah, "I'm Insane" on the DGC disc starts w/ the end of "Ghost Bitch", which involves Lee banging on a big metal sheet and Kim playing bass harmonics (on a detuned string)...see 3:56 onward:
http://www.youtube.com/watch?v=Jz9aN8LqXvA
There's a picture of Lee w/ the metal sheet (sorry, I'm not sure what it specifically is) in the Smart Bar liners, it apparently has "RISE" written on it...