one for the other nerds out there.
very wicked camera bag.
has 3 internal adjustable compartments. easily fits my 40d, 70-300mm lens, 17-85mm lens, charger, 3-4 filters, manuals, mobile phone etc.
it also takes the body and lens attached for shooting things while on the move.
to access the camera the bag swivels from your back to in front of you to allow access to the compartments. you then fold back the top flap, remove camera and start shooting. once finished stick the camera back in and swivel the bag back around to your back.
highly recommended. 
sounds very similar to my Lowepro Slingshot. Over the shoulder sling style bag that seems to do all that the one Justin has outlined above.
Added advantage with these I have found is the with the bag in front of you, you can rest on it to further steady your shooting. Great for the very windy days without wanting to use a tri or mono pod.
