USA water charity, Drink Up, has created a funny / smart talking water fountain. The aim is to help get more people to drink more water more often. They placed water fountains across New York, only when people drank the water did the fountains begin to speak.
If you want to create something similar to this yourself just buy a MaKey MaKey and have a play, they are cheap, and super easy to use.
Great work by VML + Y&R in NYC, have a look at the video below to see it in action.