Other than laptops, I've never had an off-the-shelf PC, so I always keep an eye out for a cool PC chasis. The most interesting one I've seen lately is Antec's Skeleton
. The Skeleton (which Antec says is 'coming soon') is the first open air PC case (if you don't count every casemod that has been open air).
As much as I do light surgery on my PC's, I have to say I really like the open design. The inside of a computer can be kind of cool looking anyway, and this is a great way to show the components. Of course this type of case comes with a little higher demand on planning. You might want a black motherboard
or power supply
, you'll want to make sure you use smart cable management for the best look, and you may want to consider quiet components as there will be little between those and your ears. Antec also mentions this case comes with side rails for rack mounting.
The open air design should do wonders for cooling your rig (I've had a few PC's where I just left the lids off because of cooling) but you'll be giving up the ability to route air (i.e. air comes in over the hard drives and leaves over the video card.) Small sacrifice for such a cool new look.