I'm sure this list is far from all-inclusive. So I invite my colleagues everywhere to offer their contributions as well.

Mark Settle, chief information officer for BMC Software, joined the company in 2008. He has served as the CIO of four Fortune 300 companies: Corporate Express, Arrow Electronics, Visa International, and Occidental Petroleum. Settle has worked in a variety of industries including consumer products, high-tech distribution, financial services, and oil and gas. He received his bachelor and master's degrees from MIT and a PhD from Brown University. He is also a former Air Force officer and NASA Program Scientist.