That rule certainly applies to Robin Standefer and Stephen Alesch, the dark-haired New Yorker and blond Californian behind the in-demand architecture-and-design firm Roman and Williams.

WSJ: The Husband-and-Wife Design Duo | Partnership

At the age of 81, Denise Scott Brown is still busy and in demand at architecture events, giving lectures and writing.

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However, since the launch of its Bulldozer architecture, AMD has seen a steady increase in demand for its high-end server processors.

FORBES: AMD's Server Market To Rebound After A Dismal Q2

Driven by strong demand for its quad-core Tegra 3 processors and the energy-efficient Kepler architecture, Nvidia reported record revenues in Q3.

FORBES: Key Factors Driving Nvidia's $20 Valuation