JimmyH: I love most of the new features - sadly, I don't drive with them often because my car is too old to have them.
The only two I hate are:
1. Automatic transmissions, in any form, whether computer controlled or otherwise. I would much rather have a traditional manual "five on the floor" stick shift configuration.
2. Those really annoying continuous chimes you can't turn off if it senses someone in a passenger seat and the belt isn't done up - as it can't tell whether there is a person or a box on the seat. When I get a new car, I will only buy one of the cars that offers this "feature" if the dealer disconnects the sensors before I take possession. I don't want to suffer that all the way home when I have just put a box on the back seat.
On a lot of cars there seem to be weird combinations that will disable these sounds. My Dad was willing to rip off the dash and disconnect the wires out of the beeper in his Hilux, but a quick Google search by me found a way to turn it off.