NOW: Sam Waterston
Sam Waterston, the second-longest serving “Law & Order” cast member in series history, picked up multiple Emmy and Golden Globe nominations for his role as Jack McCoy. He remained with the show through its cancellation in 2010, and has stayed active in Hollywood ever since. The actor currently appears as cable news president Charlie Skinner on the HBO series “The Newsroom.” —XFINITY Entertainment Staff (Photo by Jason Kempin/Getty Images)
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