As a coda to the camera-carrying topic, this is my all-time favorite camera bag. It also militates against big, heavy cameras, since they won't fit. With the coming of mirrorless cameras like the Panasonic G1, it might be coming into fashion again.
Mine is positively ragged, worn to smithereens. It's going to be tough to toss.
P.S. These have been around since before there were laptops!
Featured Comment by Tom: "I believe that bag was originally designed back in the '80s to hold one's petroglyph carving tools."