Doctor Who

This show details the adventures of the Doctor, an alien traveller in time and space. Wandering through the universe in his TARDIS, a dimensionally transcendental time machine disguised as a British police call box, the Doctor is joined by his companions as he explores worlds, meets new people and usually saves the world from ravening monsters and warmongers.

Links:

Official Site

http://www.bbc.co.uk/doctorwho/

Wikipedia

http://en.wikipedia.org/wiki/Doctor_Who