Looks cool mainly. I have mine mounted in the bathroom, where it monitors my toilet paper dispensing situation (the toilet roll holder hangs under it) and also provides some useful blinking lights for these dark night-time trips.
The xserve is a Server. It is designed to be a computer than is always on and serving content to other users.
Definition of Server:
a person or thing that provides a service or commodity, in particular
a computer or computer program that manages access to a centralized resource or service in a