Only ET is with Jay Leno and his wife, Mavis. Their first interview since revealing her dementia battle. Then, Melissa McCarthy addresses Barbra Streisand’s awkward weight loss comment. Plus, Robert De Niro’s on-set rant. And, Britney Spears’ profanity-laced tirade. Why she’s going off on her sister Jamie Lynn. Then, Valerie Bertinelli and her new man. Plus, an inside look at her rocky marriage to Eddie Van Halen. And, Ryan Gosling’s heart-pounding movie premiere. Stunt doubles falling from the sky. And, how he brought back “Beavis & Butthead”. Then, Chris Pine’s surprising new gig? Plus, Kim Raver on the new season of “Grey’s Anatomy”. And, “Hacks” is back with big guest stars and Jean Smart’s new presidential love interest.