I got a bit sick of watching alltheusualsuspects and their coverage of Hurricane Katrina, and so I decided to try and find a few other resources to share with you.
As people evacuate, there are webcams provided by the Louisiana Department of Transportation, and you can get a sense of how people are doing, as well as a general sense of weather conditions.
Two TV stations are broadcasting live online - the NBC affiliate, WDSU, as well as the CBS affiliate, WWL - their coverage, for obvious reasons, is infinitely superior to anything you'll find at this point by the national outlets.