Just traded in my Chevy Colorado extended cab for a xD this weekend and I'm so glad we did. My wife and I share a vehicle, she loves our new xD way more than my old truck. It's fun to drive, handles like a sports car, looks great! I drove my wife crazy this weekend asking to go for drives around town!
The built in iPod connector and auxiliary mp3 player plug-in. I have an iPod and my wife has a Zune, so its great having the ability to plug both in (we couldn't with my truck).
Illuminated window and door lock buttons and arm rests for the front seat.