The Wall Lamp is one of my favourite items. Its ideal for bringing light to a space without taking up vital counter top space. Wall lamps are also a great solution if you have either very high ceilings or if your ceilings are too low to have a hanging lamp. I'm hanging mine above my dining table in the kitchen.
It's also particularly transient and ideal for rental spaces as you don't necessarily want to be wiring the walls. This is a way to have a nice statement piece of lighting without having to wire anything.