Kelsea Ballerini & Arsenio Hall Bring Back "Greatest Hits"

YH goes behind the scenes of ABC's "Greatest Hits" with hosts Arsenio Hall and Kelsea Ballerini, who explain the concept of the show and talk about some of the show's epic musical pairings, including the Backstreet Boys and Meghan Trainor! We also chat with performer Gallant about his duet with Seal, plus we catch up with mastermind Ken Ehrlich and find out how LL Cool J and Wiz Khalifa saved the day!

DWTS Rehearsals with Dwight Howard & Daniella Karagach

NBA champ and "Dancing with the Stars" pro partner teach us steps from the pasodoble.

Shin Lim Shows Us Crazy Card Tricks

Hanging out with renowned magician in his dressing room at The Mirage in Las Vegas.

Falling In Love with The Notebook Broadway Musical

Behind the scenes with Noah and Allie actors John Cardoza and Jordan Tyson.

Aerial Silks Lessons with Cirque du Soleil: KOOZA Performer

Aerial acrobat Mizuki Shinagawa teaches us the basics of performing on aerial straps.

Walking The High Wire with Cirque du Soleil: KOOZA

Tightrope walker Flouber Sanchez teaches us how to walk on a high wire.

How Magician Shin Lim Comes Up With New Ideas For Tricks

Inside the Las Vegas dressing room of the world-class performer.

Magician Shin Lim Announces Move From The Mirage to The Venetian

Behind the scenes at 'Limitless' live stage show in Las Vegas.

The Thundermans Stars Finish Each Other's Sentences

Jack Griffo and Kira Kosarin test their on-screen twin telepathy to see how well they know each other.