Mostly people who have already died...such as Jesus (so I can ask WTF were you talking about), Ghandi, Socrates, Ayn Rand, Goethe, Shakespeare, Da Vinci, Caravaggio and other great thinkers/artists/heretics. Of those still living, Christopher Hitchens and Ayaan Hirsi Ali. Hell, add Dawkins too, if we could loosen him up with a drink or two.