Well let's see...
I wanted my first case dedicated to the oldest vertical games (I love Ms. Pac-man, Gyrus, Mad Planets, and many other old verticals).
I saw a polished metal control panel in the "Project Arcade" book and knew right away that I wanted to do something like that.
I am a programmer/architect/project manager by profession and felt pretty weak when it comes to graphic skills so I thought a black/polished aluminum appliance-theme would be doable and look cool.
My intention is to do a close-to-piano-black type of paint job and throw in some polished aluminum laminate trim and the artwork above.
I have much of the software config the way I want it on my test bed machine. One of the few things I might have done different than normal is how I handle the "coin" buttons - if you look at the dashboard and control panel overlays, you will see I don't have any. Using AutoHotKey (can be done with Mala and AdvanceMame as well) I made it so that when you press the player 1 or 2 start buttons - a credit is automatically inserted - hence the name "Zero Credits" (needed to play).
Construction-wise, I am using 3/4" plywood, wood glue, and a jig saw. I drew the side profile in Illustrator and then printed it full size, line up all the paper on the plywood, and cut along the lines

The pedestal (not finished either) will have a visible window just above the footboard/kickstop board that shows the computer in UV with glowing cables and such. That entire section is enclosed in its own drawer-like box with neato-looking chrome-jet fans (one for intake, one for outflow) on either side. This entire CPU-panel will fold outward on a hinge for easy access.
The control panel is also hinged to pull forward for access and their is a large hinged door on the back of the upper-cab. The design is a two-piece so that I can move it easier and I have a great looking polished-aluminum 3-piece 3D speaker set that sounds and looks great with the cab.
I'm also going to install a camera which will be able to take pictures when recording high-scores (perhaps a short video option as well) and also to act as a motion sensor in "attract" mode. See, the first time I walked past a Bezerk game it said "Insert Quarter" and I thought it had somehow noticed me and said this. So I am going to do this for real - when motion is detected, I will have it say various phrases like "I bored, please, come play with my joystick!" or "How about a quick game human?". You get the idea.
All the artwork was done in Adobe Fireworks except for the outline/profile of the top half which I did in Illustrator for the curves. I wanted a very curvy cab as I think they look cool
Equipment wise I will be using a fully programmed UltraStik360 with a black ball top, all buttons are black, the power button is small/custom round with blue led, and the flight stick also has a blue light/highlight. The CP will also sport a blue translucent 3" high-top track ball, a SlikStik Tornado Spinner, and the Saitek Evo Flight Stick.
I'm still using AdvanceMame for the main emulator because I can get such "perfect" resolutions for the games. Also, I like to run some of the classics, at 3x resolution with a Scale effect and I think they look fantastic.
All button uses are labeled on the CP and match the interface that is shown on the Mala layout.
Anyway, this feels a lot like rambling so I will stop here. If you have any specific questions I will be happy to answer them.
Thanks for the feedback.