I recently bought an Aquapac Phone Case. The link is below. The price is comparable to the others on the market and it seems to be well made. I have used it on two trips already and I can operate my "My Touch" just fine. Some of these cases do not allow for taking pictures, but this one has a clear side on one end (for operating the main cell phone screen) and then it has a small clear window on the other side for taking pictures. My case came with lanyard as well. I added a pic taken with my cell using the Aquapac. The picture is not great, but not terrible either.
I usually carry an Olympus Tough Camera when I go kayak fishing, but it's nice to know I can use this to take pics too.
http://www.kayakfishingsupplies.com/...ne-Case/Detail