Timely and useful.

Something like this could really help morale, especially if used on special occasions (e.g. Wrestlemania weekend).

Anytime I've entered a room to selected theme music (weddings, recreational sports, a roommate watching me through the window and hitting play), it's always given me a nice pop.

I think it's a good idea for businesses to spend time on little things to make their employees feel special, in addition to doing the important things well too.