Zach Braff, Demi Lovato, Demarjay Smith, Ed Sheeran

He became a household name as the adorable doctor J.D. on nine hilarious seasons of the hit show "Scrubs"! ZACH BRAFF went on to write, direct and star in the heartbreaking romantic comedy "Garden State" with Natalie Portman. He's here to tell us all about the film he directed, "Going in Style."

Then, DEMI LOVATO is here to chat! The entertainer has always been open about the struggles and triumphs in her life. Today, she'll share details of her animated film, "Smurfs: The Lost Village."

Plus, our resident kid fitness enthusiast, DEMARJAY SMITH, is back with Ellen to give us the scoop on everything he's been up to!

Also, international superstar ED SHEERAN is here to perform his song "Castle on the Hill" from his hit album, "Divide."

It's happening now, on Ellen!