Plot: KATHERINE HEIGL has charmed her way from the hit show "Grey's Anatomy" to being Hollywood's new leading lady! She's starring in the new film, "New Year's Eve. " She's here to catch up with Ellen, and tell her what her plans are for the big holiday! And, It's the most wonderful time of the year on Ellen! It's Day 5 of Ellen's 12 Days of Giveaways! Plus, rock legend LENNY KRAVITZ performs a new song from his incredible new CD, "Black and White America