Design created using elements of others with some of my own as well. My goal was as simple and error free operation as possible. A key element was having so there was no guesswork for others to use, i.e. must meet WAF! I hid the configuration panels for the lighting and Sony VPL-VW50 projector (easily accessible via the initial home page) so others would not know it was there.
Some elements I like about it are:
Clean look and operation.
Each device page (i.e. DirecTV, HD-DVD, BluRay, XBox, etc.) have the logo of the device as the background.
All devices are automated fully, whether turning on or off.
A ton of discrete codes for pretty much everything.