As my friends know I am a great believer in the importance of taking time to ensure that I and my colleagues have fun at work. In fact "Have Fun at Work" was one of the official corporate values at Lotus when I first started in my current job. Unfortunately IBM does not have a similar corporate value, so it lapsed as partof the take-over.
However, many IBMers do some great work to ensure that IBM is a really fun place to work. A large portion of the key leaders at the Dublin Software Lab are former Lotus people and as a result of this many of our employee surveys speak highly of how it is a really fun place to work. I think we need to be careful that we don't lose this culture because it is a valuable recruiting an retention tool.
I recently found this wonderful TED talk by a Primatologist named Isabel Behncke Izquierdo where she explains much more eloquently than I ever could why the human race could increase tolerance and harmony by learning from studies of how Bonobo society values play.