From Wikipedia
First Doctor, played by William Hartnell (1963?1966 [38])
Second Doctor, played by Patrick Troughton (1966?1969 [38])
Third Doctor, played by Jon Pertwee (1970?1974 [38])
Fourth Doctor, played by Tom Baker (1974?1981 [38])
Fifth Doctor, played by Peter Davison (1981?1984 [38])
Sixth Doctor, played by Colin Baker (1984?1986)
Seventh Doctor, played by Sylvester McCoy (1987?1989, 1996) [39]
Eighth Doctor, played by Paul McGann (1996)
Ninth Doctor, played by Christopher Eccleston (2005)
Tenth Doctor, played by David Tennant (2005?2010) [7]
Eleventh Doctor, to be played by Matt Smith (2010-)[9]
http://en.wikipedia.org/wiki/Doctor_Who
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