Oscar® nominee and 'Brokeback Mountain' star HEATH LEDGER joins Ellen and takes a ride in a luge! Plus, SHERYL CROW chats with Ellen about her breakup with Lance Armstrong. SHERYL also performs "Always On Your Side" from her hit album "Wildflower." SHERRI SHEPHERD said she would do anything for Ellen…you won't believe what Ellen has in store for Sherri!

Ellen hosts a special episode to kick off "Breast Cancer Awareness Month." Ellen, whose mother is a breast cancer survivor, is joined by musician and breast cancer survivor SHERYL CROW who shares some preventive tips with viewers. Plus, CHRISTINA APPLEGATE, whose mother is also a breast cancer survivor, stops by. Plus, four remarkable audience members donate their hair to Pantene's "Beautiful Lengths" to make wigs for women with cancer.