It was for me too. Mainly because I had already known about the other casualties of the attack in the U.S.
I didn't really know about him until the movie. Also because it really shouldn't have happened, we should have been helping him fight the Taliban long before 2001, and the revelation that the U.S. foreign aid to Afghanistan in the amount of hundreds of millions was going to the Taliban and not the Northern Alliance was infuriating.
If you get a chance, pick up George Friedman's (STRATFOR)book called America's Secret War. He does an outstanding job laying out background so we can understand what happened over there leading up to the attack. He goes into great detail regarding the tribes and what it took to get the initial CIA and special forces on the ground there.
The mindset of these people are so different than ours. It's a great read for anybody interested in the War on Terror.
Typical Clinton obstruction and obfuscation.