Singer Beyonce and rapper Jay Z perform onstage during the 56th GRAMMY Awards at Staples Center on January 26, 2014 in Los Angeles, California.
( - Source: Kevork Djansezian/Getty Images North America)
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Some celebrity couples just can't get enough of each other. They not only spend their free time together, but also collaborate at the "office." Here's the famous duos who love mixing business and pleasure.