Understanding America's Enemies - Robert Fisk's site includes transcripts of many interviews with bin Ladin and others, from 1996 onwards.

Global Terrorism Analysis - "In-depth, objective analysis of al-Qaeda and the War On Terror"

Beware the Holy War - Peter Bergen takes a critical look at “The Power of Nightmares”

Inside al-Qaeda's Hard Drive - “Budget squabbles, baby pictures, office rivalries—and the path to 9/11”

IntelCenter -- this site primarily wants to sell you DVDs and expensive reports about al Qaeda and terrorism in general, but there are also some useful free documents that are worth a look.