In this combination photo, Julia Roberts, left, appears at the 69th international film festival, Cannes, southern France, on May 12, 2016, Jack Black, center, appears at the premiere of "The Polka King" during the 2017 Sundance Film Festival in Park City, Utah, on Jan. 22, 2017 and Orlando Bloom appears at the Vanity Fair Oscar Party in Beverly Hills, Calif. on Feb. 26, 2017. NBC announced Thursday, May 11, that those stars will be joined by Mark Hamill, Bear Grylls, Dax Shepard and Yvette Nicole Brown during the Red Nose Day fundraising telecast on May 25. (AP Photo/Files)