Meryl Streep shares her thoughts about being asked to play a witch, and smooth talking Mark Ruffalo gets taken by surprise!New episodes of The Graham Norton Show premiere ***Saturdays at 10:15 / 9:15c, only on BBC America!***Watch GRAHAM's Wildest, Craziest Moments Ever: http://bit.ly/1vnKBZrSubscribe now: http://bit.ly/1aP6Fo9Twitter: http://twitter.com/bbcamericaFacebook: https://www.facebook.com/GrahamNortonBBCATumblr: http://grahamnortonshow.tumblr.comInstagram: http://instagram.com/bbcamerica