The short film "Fitna," by Dutchman Geert Wilders is more critical of Islam than anything I have seen before it.
"Fitna" is beautifully executed, and the soundtrack fits superbly with many of the clips. One large criticism I have is the placing of photographic stills of people holding "God Bless Hitler." More valuable footage could have been placed in the time period used to show that picture.
There is some really gruesome stuff in here, so please don't watch if you are very young or are weary of extreme violence. I'm serious.