Marvel had the 'nuff said month in 2002. Howabout a special month of silent stories for DC?
Batman - Maybe a many deaths of Batman remake running through all the bat books.
A Harley Quinn silent gag-strip issue, Green lanterns encounter a race that uses a different mode of communication, Superman/LOSH using Kryptonian and Interlac, Ravagers/omega men in the silent vacuum of space....
Your ideas on this?