Today's a day all about love -- and it's harder to find a band that Ellen loves more than LADY ANTEBELLUM! They made their television debut with Ellen and have had huge success ever since. Just this year, they're nominated for a whopping six Grammys! They'll chat with Ellen and perform their hit, "Hello World." COLIN FIRTH knows all about love at first sight -- it happened when he met his wife! He'll share the heartwarming story of how they met. He'll also tell Ellen what it's like to be nominated for an Academy Award for the second year in a row! When BEN McKENZIE was last here, he told Ellen about a scene he did in "Southland" -- without pants! Maybe he'll consider doing a pantsless interview today! The sexy guy is stopping by, and he'll make sure to give Ellen an update on his adorable rescue dog, Oscar. Ellen will be testing how strong love is between her newlywed fans when she plays a special version of Newlywed Know or Go! The stakes are high for these newlyweds -- if they don't know enough about each other, they GO!