If it maintains its current central pressure, Katrina will be the most intense named hurricane to impact the United States since the naming of storms began in 1950 (and second overall since the recording of hurricanes began in 1851), being larger in size and slightly stronger than 1969 Hurricane Camille's central pressure of 909 mb.

BoingBoing has a useful collection of Katrina links if you are looking for news.

Boing Boing: Katrina approaches New Orleans, US Gulf Coast