Today is Mama's 80th birthday and Ellen is celebrating in style! Betty DeGeneres has stood by her daughter since day one, and today Ellen will thank her with a special tribute -- plus a phone call from one of Betty's favorite television stars! And there might just be some surprises in Mama's honor -- for the audience and even viewers at home! Since it's such an important day, Ellen wanted the sexiest and funniest guest, and had only one guy in mind: ANTONIO BANDERAS. He's reprising his hysterical role in "Shrek Ever After," and once told Ellen the ladies love Puss in Boots more than him. Fortunately, Melanie Griffith knows which is more important; they just celebrated their 14th wedding anniversary! Then, it couldn't be a great birthday party without the best band, so WEEZER is performing! They've been popular for almost two decades with some of the best songs of the '90s, and today they're singing the hit song "I'm Your Daddy" from their latest album, "Raditude."