See here. It's a wonderful idea. Draw your most offensive portraits of that insufferable jackass Muhammad, guys and gals. I'm certainly planning on it!
On May 20, I'm planning on making a post that will have my own submission(s) as well as links to the blog entries of any of our readers who want to participate! If SE's not down with the idea (understandable, considering he has some level of taste and restraint, which are both completely lacking with yours truly), I'll do it on my old blog and link it from here.
Man I love mocking other people's stupid beliefs.