My bag is pretty crammed right now.
The top mesh flap has my spare battery, lens paper, microfiber clothe, cleaning solution, and CF holder.
The left pocket has the AA tray for the battery grip, and the USB cable for the camera.
The right pocket has band aids, chewing gum, business cards, pen and paper.
The front pouch has the camera's manual, 8 spare AA batteries, blower brush, flashlight, white card, and a few other things (local media pass).
Thanks to T.J. Lathrop / Digitalwave for photo/comments.
In the bag
Canon EOS 350D XT with BG-E3 Grip
Sigma 18-50mm EX f/2.8
Tokina 80-200mm AT-X F/2.8 (w/ lens hood)
Peleng 8mm f/3.5
canon 350d rebel xt