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Amy Poehler, Will Arnett

NEW YORK, NY - APRIL 28: Actors Amy Poehler (L) and Will Arnett attend The Comedy Awards 2012 at Hammerstein Ballroom on April 28, 2012 in New York City. (Photo by Gilbert Carrasquillo/FilmMagic)

2012 Year In Review: Celebrity breakups

It was a sad year for Hollywood romances, and some of the most famous couples in Tinseltown split in 2012, from TomKat to Heidi and Seal. We bring you the top 10 break ups. -- Soraya Roberts