Frequently voted America's favourite on-screen President, 24's David Palmer was credited with getting the American public used to and comfortable with the idea of a black president and so paving the way for Barrack Obama - and it is easy to see why. Stylish, charismatic, honest, dedicated, intelligent, worldly, credible, honourable and heroic (insert your own comparisons to George W Bush). Only time will tell if 24's President Allison Taylor will do the same for Hillary Clinton.