The above link says that Tony Blair is disputing that Bush wanted to bomb Al Jazeera. This is interesting in why it came about more than anything else. It becomes a self fulfilling prophecy, i.e. Bush is stupid and hates Arabs, therefore, it is believeable that he would want to do that, therefore it is true.
Of course, this goes along with the many urban legends that arose around the conduct of the war. Like all good urban legends, the willingness to believe takes over the abiltiy to discern the truth.