I'm actually a big fan of the Hyundai Veloster's touch screen. It provides all the functionality you'd expect, without the convoluted menu systems of other cars.

http://gaspuol.files.wordpress.com/2012/11/2013-hyundai-velo...

http://www.extremetech.com/wp-content/uploads/2011/09/MY12_F...

Granted, this UI looks great, although has a few interaction oversights: what if I lost a couple fingers in an industrial accident and only have 3?