"It basically means I have to call my friends... and round them up, or non-friends, or people who hate me and say, 'Please will you come on the show...?' Some people say no, some people can't (do it)." Gwyneth Paltrow on her role as producer of Friday night's (05Sep14) Stand Up To Cancer charity telethon in America. Dave Matthews, The Who, Ariana Grande will perform during the celebrity fundraiser and Paltrow's Iron Man co-star Robert Downey, Jr., Halle Berry, Reese Witherspoon and Ben Stiller will be among the big names presenting segments.