"It really has a lot of doctors like me really unhappy with what they're doing, " says Richard Stein, a cardiologist at Beth Israel Medical Center.

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Employees are really, really unhappy.

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Which would create quite a few unhappy people really.

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But there could also be a Catch-22 at work: If the established musician does something really fresh, her audience is unhappy she's strayed from what they know and like.

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"In California you see people exercising at 05:15 and it's either great for them or it is part of a really neurotic psychosis where they're desperately unhappy because they're getting older, " says Ed Saxon, who produced the film Fast Food Nation in 2006.

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And how dowdy does Hedda's needy maiden aunt (Julie Hamilton) really have to look in order to make sure you empathise with the unhappy bride's marital prison?

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