The 4th annual CAT WEEK has had an exciting start. Catch the fun this week, before it's gone for another year... or 7, if you're a cat. He's a star of film, television and Broadway! One of Hollywood's most critically-acclaimed actors, ETHAN HAWKE is in our studio to discuss the release of his highly anticipated new film, "Before Midnight." He's also starred in some of the most memorable films in recent history, like "Dead Poet's Society," "Gattaca," "Reality Bites," "Training Day" and "The Purge." He's telling Ellen what's new in his life and career, and about his upcoming return to the stage! Then, they got their start right here on Ellen's show, now LADY ANTEBELLUM is one of the biggest bands in country music! What better place for singer Hillary Scott to make her first appearance after having her baby?! She's giving Ellen all the details about her new daughter, Eisele, and what it's like being a mom on the road. And of course, they're going to perform! Don't miss their new hit, "Compass," this Tuesday on Ellen!