UBL's message is not radical or insane. He is simply preaching a devout adherance to the laws of God, as he sees them.
As Lemur said, not mutually exclusive.

Despite the propaganda put out by "the West" (i.e., The U.S.), the goal of "Islamism" or "Islamists" is not to destroy the United States but rather to wage war militarily against the invasion of the lands of Islam.
Gee, I must have been blinded by all the times they said they want to destroy the 'Great Satan' and the fact that they attacked the WTO, not a military target, and not any of the troops in Saudi Arabia.

Alot of people don't understand that UBL and AQ have nothing to do with the war in Iraq
Perhaps not in 2003, but AQ is there now. They claim to be AQ and have ties to AQ, and I haven't seen OBL disavow them.

The thing is, Zak, you tend to ascribe to our bloodthirsty (and yes, OBL is bloodthirsty and vicious) enemies the very best of intentions, while you ascribe to your countrymen the worst of intentions. You take on face value a claim that our enemies are fighting 'defensively' and only in accordance with noble values of their culture, while insist that the USA's invasion of Iraq was do to a bushitlerburton conspiracy.

The fact that you assume the worst possible reasons for our actions and the best possible reasons for the actions of our enemy is interesting.

CR