Originally Posted by chris 
Seidio makes a hardcase that claims to be super thin.
The Seido hardcase is awesome; I've got the blue "rubber texture" one on and it's dreamy. The hand it gives the device is reassuring, less slippery and a little more recess to the screen so it's less likely to contact stuff on a surface when put down or carried. It snaps on easily and fit perfectly, even allowing access to the strap/loop (you don't need to remove charms/straps/dongles to put the case on). I've dropped the thing once on carpeted but firm flooring and the case popped open but didn't remove. Snapped it back together and since then it's been dumped from a backpack more than once and has traveled loosely in a collection of junk and has not dislodged.
Used with the Seido holster-clip for covered phones, another perfect fit, the screen is totally protected while in transit. The holster clip has a really secure feeling but easy to open release, too. The holster doesn't like straps or dongles though, you can see that only the japanese threaded charmstraps fit when holstered in the endshot below.
