Kevin Hart is taking the reins of the Comedy Central Roast of Justin Bieber. The event is set to tape on March 14 and air on Monday, March 30 at 10 p.m. on Comedy Central. Hart said in a statement, “I don’t normally do roasts, but I had to step out for my guy Biebs. It’s his big 21. It’s about to be operation roast everyone’s butt.