Sometimes CD cases and the little booklets you get with them make actually buying music to support your favorite bands (even if it's only in spirit) makes the experience all the more wonderful.
This would be the case with Sigur Rós's CD entitled "( )".
(http://images.amazon.com/images/P/B00006LLNU.01.LZZZZZZZ.jpg)
see, the parentheses are actually a cutout and the CD's image is behind it. But the really cool thing is the booklet. It's 14 or so pages of blank paper :D so that the listener can make their own interpretations. That's as experimental as they come :)
argh I posted this in the wrong board
some admin move it kthx