The folding side mirrors when I lock the car.
It's the minor bits like that remind me that you are driving a luxury sports sedan.
The 12GB jukebox , I threw every album I have at it, even tossed in the soundtracks I ripped off the Amazing Spiderman vs King Pin SEGA CD game.
The phone integration, reading and writing text messages though the MMI with the touch pad.
The Dynamic Mode of Drive Select that wakes up what would be a pretty lame 2.0T ride without it.