Just ordered a GNex. Hook me up.

I have an iPhone 4S that I've had since launch, and I'm selling it before the new one is announced so I can upgrade to the new one. In the meantime, I've ordered a GNex to use in the meantime. What should I do to pimp it out? I'm on a Mac, but have a Windows laptop around if that would be easier. Any good app suggestions to help me appreciate the difference in philosophies between the two different OS's? Best ROMs? Anything you can think of really.