I agree that Alex DeLarge writes some very good reviews, and his War Films Group is how I was introduced to one of my favorite reviewers, GODFORGE.
He hasn't posted any reviews on the Netflix site, but some of his best efforts can be found if you just scroll down on this page of comments from the War Films group.
I second Yipyop. As for people not necessarily on Ning and not in the top 25 (just going through my faves), I'd also add Flak Magnet, Ironduke, *bug*, HK Fanatic, Raskolnik and Martini. I'm sure I'm forgetting people but that's all I feel like scavenging links for at the moment.
Scissorshock definitely. We seem to review a lot of the same movies. I probably would have listed him/her had I not gotten lazy about getting links. ;)
scissorshock is occasionally good, but has an extreme propensity to overuse the "eh" and the "meh" and the "awesome." Which leads me to find him... "meh."