Every so often something small blows you away so immensely, that few word can do justice. I don’t know if this should be followed in any particular order, but my experience went as follows:
1) http://wfmu.org/listen.ram?show=18526&archive=26545
from 1:00:43 to 2:03:12
2) http://www.pitchforkmedia.com/features/weekly/06-03-27-daniel-johnston.shtml
3) http://www.hihowareyou.com/
4) http://www.salon.com/ent/movies/review/2006/03/31/johnston/index.html
5) http://www.nypress.com/19/13/film/MattZollerSeitz.cfm
That’s it. You're completely on your own here. Obscure, obtuse, and insane.