My 1Ds. Once.
I left for the airport to go planespotting, but for some reason or other I had my 1Ds and 28-70 f2.8L outside the bag, I put it on the seat, but I was in a rush and didn't put the seatbelt through the strap like I normally do, I got to the airport, went up the helix ramp, and that pushed the camera outwards against the door (which I did not notice), when I opened the door, I just saw the camera fall down.
The lens hood took most of the impact and cracked along the length (it still works, but it needs some superglue and gaffers tape), the lens itself took some impact and the mount popped out slighty (I pushed it back in and worked -but I lost the ability to focus at infinity any wider than 35mm or so), had it fixed, together with some other components that were worn or damaged, including some of the lens elements that had the adhesive bubbling up, for $350 or so, not bad. The 1Ds was fine, ironically it was the cheapest piece of equipment.
Years before I dropped my 18-55 II, it fell out of my backpack, hit my truck's bumper and then the pavement, the only damage was the AF/MF switch that got knocked out of alignment from the PCB mount switch, which took 10 minutes to fix, the lens performs flawlessly to this day.