I like it.
Yeah those controllers are and awesome find, i've bought a few myself.
You have the remote option like jammin0 is using or you can get the mini, i eluded too in a prior post. Its just 3 buttons and you cycle through the same effects as the remote option. The remote just gives you direct access to each mode. You can get these for about 1.50 on ebay. Just search MINI LED CONTROLLER.
Also, Jammin0, just in FYI, those controllers work with 5v as well not just 12v.
Also, i've crammed a few xboxes in bartops, so i'm interested in your technique and part placement. If your softmodding and not doing a TSOP, i have some ideas for you to get rid of the flubber and the xbox intro sound.
I can also show you how to get your power button to stay lit while the machine is off, its a pretty cool touch. HMM, what would be cool is to have a power button that shifted colors like the marquee....
Awesome work man....