QI (Quite Interesting) is a British comedy television quiz show. It is now hosted by Sandi Toksvig who took over from Stephen Fry. There are four contestants in each show, of whom one is always Alan Davies. The shows' series are lettered (not numbered as most television shows are), for example the first series is Series A. To begin with, "QI" was shown on BBC Two but was moved to BBC One for Series F.