The Webcomics Hurricane Relief Telethon Book, $11.95 (left). A collection of over 100 comics from The Webcomics Hurricane Relief Telethon. All proceeds from the sales of this compilation will go to the Red Cross to aid victims of Hurricane Katrina.
Also, The Baton Rouge Cartoonists Society has done a Hurricane Relief Anthology that debuted at SPX. Check back to this post; I'll update when I get concrete ordering information.
UPDATE: get the BRCS Relief Anthology here. Ten bucks well spent.