Watch Eureka Season 4 Episode 9 Online

Among the stars gathering for the cause will be George Clooney, Will Smith, Gweneth Paltrow, Billie Joe Armstrong, Denzel Washington, Stevie Wonder, Seth Rogan, Queen Latifah, Laura Linney, Jim Parsons, Michael C. Hall, Sally Field and Natasha Bedingfield, all jammed into an event hosted by network anchors Katie Couric, Diane Sawyer and Brian Williams.