Sam Harris isn't just critical of Islam, he's bigoted: Watch this clip of him saying suicide bombers are clearly just made crazy by their religion, rather than having any secular reason to be angry (Reza Aslan, the muslim he's debating, makes some really good points as well if you can bothered watching the whole debate)

But I think greteldragon has made my point better than I could, so I'll let you two duke it out :D