To launch Nestle's new water infused with Electrolytes McCann NY called upon Steve Pevnick who pioneered the waterfall writing technique back in 1989 to create The Fountain of Electrolytenment. An interesting experiential event that lasted 3 days at LA's The Grove.
Even though this tech is 20+ years old it still has a presence. The addition of the live feedback via the glowing ball is a nice modern twist with interesting theatre. The agency had three people on hand ready to respond to the questions. Initially I thought it was some computer based response system, but just having people behind the scenes is much smarter.