Second Doctor
The Second Doctor is an incarnation of the Doctor, the protagonist of the BBC science fiction television series "Doctor Who". He was portrayed by character actor Patrick Troughton.
Doctor Who (series 2)
The second series of British science fiction programme "Doctor Who" began on 25 December 2005 with the Christmas special "The Christmas Invasion". Following the special, a regular series of thirteen episodes was broadcast, starting with "New Earth" on 15 April 2006. In addition, two short special episodes were produced; and an interactive episode, as well as 13 "TARDISODEs".