Doctor who to be precise. Doctor Who has been a sci-fi phenomenon for over fifty years. The show originated in 1963 and run through 1989, totaling twenty six series (in the UK series = seasons). Then the show was revived in 2005 and is currently on its seventh series. In total there have been eleven doctors, the most current doctor is played by Matthew Smith.
The protagonist, the Doctor is the last of the Time Lords, an alien race, who travels through time and space in his TARDIS (Time and Relative Dimension in Space). Along his many journeys and adventures, the Doctor meets many companions that then travel along with him throughout the universe and time. Besides companions, the Doctor also aquires many enemies. Enemy number one are the Daleks, an genetically altered (can only feel hate) alien race that fought against the Time Lords in the Last Great Time War (in which both the Dalek and Time Lord races were wiped out). The Daleks were able to repopulate and still try purging the rest of the universe of a non-Dalek race.
Doctor Who will have you on the edge of your seat, laughing along with the characters, and routing for the Doctor.