In James Cameron's Avatar, we're introduced to an alien race that we immediately take to: the almost-human Na'vi. But sympathizing with slightly-different people is easy. Here are few examples of sci-fi giving us truly "alien" aliens.
If anyone had any doubts that Torchwood could be a success on the more mainstream BBC One network, the audience turnout for the first episode of Children of Earth will have changed their minds, almost doubling previous viewing figures.
Torchwood: Children of Earth, premiering tonight in the UK, may be a new format for a darker Torchwood, but it's still the series we've come to love, according to one of the show's producers.