Even this year we've had arguably higher profile BYU grads come spreak to us in the MBA program than the U has on their list. People like U.S. Senator Gordon Smith and Dell COO Kevin Rollins come to speak at this small forum.
Besides sports (where we all know the famous names there), people like Mitt Romney--Governer of Massacheussettes (and possible future presidential hopeful), the dean of Harvard Business school (Clark) and others come to mind. It looks sad to list Rockey Anderson as a famous U grad. That really stretches the definition.
When you find the list, BYU is way ahead.