Military evaluation of Operation Iraqi Freedom
For those of you who are looking for a military analysis of Op. IF, I'd point you in the direction of Anthony Cordesman, who provided expert analysis during '91 and '03 as well. He has written The Lessons of the Iraq War, of which both the full report and the executive summary are available online for free (both in pdf format).
Interesting reading. Cordesman deals with an issue which particularly interested me during the campaign: the performance of armored helicopters like the AH-64 Apache.