John Barrowman 's popularity came with the continued runaway success of his bisexual Captain Jack Harkness .
John Barrowman , who is himself gay , has ranked in the Independent on Sunday pink list , a list of the most influential gay people in Britain , in 2007 , 2008 , and 2009 with the Independent commenting that `` Proof of his popularity came with the continued runaway success of his pan-sexual Captain Jack Harkness on Russell T Davies 's Torchwood '' .
Jack Harkness