Great word for Banned Books Week...samizdat.
from Anu Garg's A.Word.A.Day PRONUNCIATION: (SAH-miz-daht)
noun: An underground publishing system used to print and circulate banned literature clandestinely. Also, such literature.
From Russian samizdat, from samo- (self) + izdatelstvo (publishing house), from izdat (to publish). Coined facetiously on the model of Gosizdat (State Publishing House).