Here we see that portrayals of Muhammed's image is quite common and has been going on since the early days of Islam:

http://www.zombietime.com/mohammed_image_archive/

Granted, I am no fan of Christian fundamentalism, but in this case, Islamic fundamentalists might benefit from modeling their attempts to bend nonbelievers to their will after that of their Christian counterparts. Most recently, the Christian Fundamentalists, when confronted with what they felt was a sacreligious portrayal of Christ succeeded in getting the offending show (The Book of Daniel) cancelled, and without destroying any property, kidnapping any infidels, or killing anyone. For that matter, they did not resort to silly measures like demanding apologies from the US government for allowing media outlets to produce such a show