I'd like to nominate my team, 1619. Disclaimer: I don't work on the electrical at all as a programming mentor.
For about three seasons, we have used electrical wire ways to organize our wiring. It's a convenient way of easily cleaning up the wiring and allows us to easily add wiring to accommodate changes later on.
The electrical team also lays out the components in Solidworks before any assembly or fabrication occurs. I highly recommend this, since it prevents unforeseen issues with assembling the electrical system.
Here is the panel from last year's robot:
http://www.chiefdelphi.com/media/photos/38401