Katie Couric, Diane Sawyer and Brian Williams host a fund-raiser for cancer research. Stevie Wonder leads a musical number that includes Natasha Bedingfield, Queen Latifah, Martina McBride, Aaron Neville and Dave Stewart. Also appearing are Christina Applegate, Lance Armstrong, Fran Drescher, Michael C. Hall, Kareem Abdul-Jabbar, Sharon Osbourne, Maura Tierney, Sofia Vergara and Ethan Zohn.
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TVGuide.com editors break down theories about what's coming up on The Walking Dead