Michelle Malkin has the 12 forbidden cartoons (if for some reason you are new to the controversy in Denmark). She also has photos of the reactions by some of the followers of a "religion of peace."
Here's a collection of images of Islam's Mohammad from bygone years - and some more recent. (H/T: Instapundit) My favorite, of course, is the Legos version - it's near the very bottom of the page.
Will the people behind the Brick Testament also bring us the Brick Koran?
UPDATE: The latest on the cartoon wars