Host Kevin Hart; Macklemore & Ryan Lewis perform.

Kevin Hart hosts Saturday Night Live for the second time while Sia makes her debut as musical guest. Sketches include MLK Cold Open, Kevin Hart Monologue, Calvin Klein Ad, Why'd You Post That, Bushwick, Brooklyn 2015 and Kevin's Son.

Comedian Kevin Hart returns to host his third episode with Foo Fighters returning for a seventh time as musical guest, tying the record for most "SNL" appearances by a rock band.