Reading, going to work and navigating a busy life may be enough to maintain brain health, but lifting performance takes massive amounts of practice--learning a new language, taking regular music lessons, doing complex jigsaw puzzles--to produce enough chemicals to make synapses stronger.

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That should be enough to keep him busy, but he says his new focus is CTH, a private cable-TV operator he bought with the Vacharaphol family (No. 14), owners of the Thai Rath newspaper, for an undisclosed sum.

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The digEplayer 5500 has a 7-inch 16:9 widescreen LCD and comes loaded with about 10 movies, a few TV shows, and over 100 songs, which should be more than enough to keep you busy for the duration of your flight, and is probably more than the poor battery can handle (heaven knows our laptop batteries are looking pretty low after just an hour and a half of watching DivX movies).

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Raber says that chief executives, who are no doubt busy enough running their own companies, should be limited to one outside board membership.

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"In the late 1980s, Hilton was among the first luxury hotel brands to utilize the service, " says Mike Bare, co-owner and president of Bare International and one of the original founders of the MSPA. Three decades later, it's common practice among hotel brands around the world. (Proof: LRA recently opened a satellite office in busy Singapore.) And soon enough, its taciturn nature may be over.

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