I'm usually a fan of anyone who can take an average, everyday occurance and make me pay attention to it. The folks over at Improv Everywhere are famous (and sometimes infamous) for that kind of thing, and I love the way they can take something so simple like giving high fives on a New York escalator and change the total demeanor of an otherwise average commute into the city.
I think there are some lessons we can apply to business here too. Are there some routine things you do for your employees or customers that could use an infusion of new life or attention with a simple and creative twist? Need some more inspiration? Check out the piano stairs.