Perfect just to give your DSLR a little extra protection against knocks and bumps, we've been impressed with Made Products "Camera Armor" as shown at CES 2008.
Made of a proprietary silicone material which is heat stable to a stonking 420 degrees, not only does the rubber casing offer the camera protection, but it gives the user a good, grippy feel when shooting.
The Armor comes in separate parts and the whole system is made up of Body Armor, Lens Armor and an LCD Shield. It's available for most major models of DSLR for which it's custom designed to allow access to buttons, controls, etc.
It costs around $50, and although it's not going to save your camera if dropped on concrete from a great height, it will provide an element of everyday protection for enthusiasts.