While travelling in London, I found the Dyson Airblades installed in most restrooms/toilets. Apart from being an well designed, efficient product it bears a great intuitive interface that makes it easy to use.
Spark Wheel Lighters
I often find it difficult to use the spark wheel lighters – I can never seem to light them up!
iPhone 5 Lightning charger
The new iPhone 5 Lightning charger has a great new interface, where the user can plug in the charger without having to really look for the right side.