There was a Majacraft Spinning Retreat where the participants put a bunch of fiber on the floor in layers, tore off a hunk, and spun it up. It was blogged by JumpSheep.
Vivien was inspired to do this for a creative spinning class and blogged it on SpinAYarn99.
There's a Fiber Sandwich swap going on over on Spinning_on_the_Edge currently, but not many photos yet (of incoming fiber ... it'll be ?march before you see any handspun from it, from me, anyway!).
(posted by me this day on TechSpin)