During his 40-year career, Houston worked alongside acting greats including Henry Fonda, Robert Mitchum, Gregory Peck, John Wayne, Dirk Bogarde and Clint Eastwood.
Look at Zollars of Neoforma and George Conrades at Akamai, Carleton Fiorina of Hewlett-Packard or Gregory Brown at Micromuse, Richard Braddock at Priceline.com or Robert Howe at Scient.
In-form South African Louis Oosthuizen, European number one Robert Karlsson, Spain's Gonzalo Fernandez-Castano and Frenchman Gregory Havret are a shot further back on six-under after playing a handful of holes.