Some of the most popular "Doctor Who" Doctors are David Tennant, Peter Capaldi, Christopher Eccleston and Matt Smith. Other popular Doctors are Tom Baker, Colin Baker, William Hartwell and Peter Davison.
Some of the most popular "Doctor Who" actors are those who have played the Doctor since the relaunch of "Doctor Who" in 2005. Christopher Eccleston was the first of these Doctors, though David Tennant took over the role later in 2005. Tennant, one of the most popular Doctors, played the role until 2010, when Matt Smith replaced him. Smith played the Doctor from 2010 to 2013, when he was replaced by Peter Capaldi. As of August 2015, Capaldi is the current Doctor.
Other popular Doctors are those who played the Doctor in the earliest years of "Doctor Who." William Hartnell, the first Doctor, played the role from 1963 to 1966. One of the most popular Doctors is Tom Baker, who played the role from 1974 to 1981, making him the actor who played the character the longest. Another popular Doctor, Pete Davison, took over the role from Tom Baker, playing it from 1981 to 1984. Davison was succeeded by Colin Baker, who played the Doctor from 1984 to 1986.