Only the Lonely

From BBC News: (link)

The European Space Agency (Esa) is seeking volunteers for a simulated human trip to Mars, in which six crew spend 17 months in an isolation tank.

They will live and work in a series of interlocked modules at a research institute in Moscow. Once the hatches are closed, the crew's only contact with the outside world is a radio link to "Earth" with a realistic delay of many minutes.
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The goal is to gain insight into human behaviour and group dynamics under the kinds of conditions astronauts would experience on a journey to Mars.
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With the exception of weightlessness and radiation, the crew will experience most other aspects of long-haul space travel, such as cramped conditions, a high workload, lack of privacy, and limited supplies.

Of course, they could save a lot of time and money by just having the volunteers watch a marathon of "The Closer." I'm pretty sure that would have the same results as 17 months in isolation. Come to think of it, this could also work well at Gitmo.