The Voice celebrates 500 episodes, Pres. Clinton admits affair on Impeachment

On today's What to Watch: The Voice coaches Blake Shelton, Kelly Clarkson, John Legend, and Ariana Grande celebrate the show's 500th episode as the Knockouts come to an end; it's time for President Clinton to admit his affair to Hillary on Impeachment: American Crime Story; and Tracy Morgan is back for the fourth season of The Last O.G. Plus, entertainment headlines — including a first look at Ozark's Julia Garner as con artist Anna Delvey, and a Jonas Brothers roast — and trivia. More at ew.com, ew.com/wtw, and @EW. Host: Gerrad Hall (@gerradhall); Editor/Producer: Joshua Heller (@joshuaheller); Writer: Tyler Aquilina (@tyler_aquilina); Executive Producer: Shana Naomi Krochmal (@shananaomi). Learn more about your ad choices. Visit megaphone.fm/adchoices