Since leaving Goldman Sachs Asset Management to become chief investment officer at Janus Capital Group, Gary Black has endured weekly four-hour flights to Denver, Colorado from his family home on America's east coast.

Some might balk at such a long commute. Black prefers to point out that he is looking forward to teaching his four-year-old son to ski in the Rockies when he comes to visit. The first skill that Black's son will no doubt learn on his skis is how to stop on a downhill slope. It is a lesson that Black could easily apply to his new job.