My brother and I were taking pictures outside around the pool earlier today. He was using my 5D2 w/grip and 17-40L. Well... as you can probably guess, he fell in. Yes, with all the gear. And to make things worse, he fell in the deep part of the pool (about 10 feet deep) which meant he was fully submerged. The camera was submerged for about a full second before he was able to bring it up above the water. At which point, I grab the camera but he had the Blackrapid strap around him so I couldn't get it off (but held the camera above the water).
After some struggle he was able to get the strap off and I immediately turned the camera off, took off the battery grip, and tried to dry it off.
Anyway... the damage report is as follows: water in the lens and it has fogged up now (I had a filter but the water still got in from the front), only ONE drop of water got into the mirror compartment but the rest looked dry, viewfinder is fogged up, both batteries in the grip were wet, connector area between the grip and camera were both moist, and CF card compartment was moist.
Right now everything is sitting in a box of rice to dry. I just hope everything is ok...