Doctor Who (1980's) - 1981 to 1989
The series began in 1963 with William Hartnell. By the 1980's the Doctor was in his 5th incarnation and saw Peter Davison play the Doctor Who charector from 1981 to 1984. The Fifth Doctor's era was notable for a "back to basics" attitude, in which "silly" humour (and, to an extent, horror) was kept to a minimum, and more scientific accuracy was encouraged by the producer, John Nathan-Turner. It was also notable for the reintroduction of many of the Time Lord's enemies; such as the Master, Cybermen, Omega (a founding-father of Gallifrey), the Black and White Guardians, the Sea Devils, and the Silurians.

The seventh Doctor, played by Sylvestor McCoy saw the series to it's end in 1989.
In his first season, the Seventh Doctor started out as a comical character, mixing his metaphors ("Time and tide melt the snowman," for example), playing the spoons, and making pratfalls, but soon started to develop a darker nature and raised the profound question of who the Doctor actually is. The Seventh Doctor era is noted for the cancellation of Doctor Who after 26 years. It is also noted for the Virgin New Adventures, a range of original novels published from 1992 to 1997, taking the series on beyond the television serials.
The Seventh Doctor's final appearance on television was in the 1996 Doctor Who television movie, where he regenerated into the Eighth Doctor, played by Paul McGann. A sketch of him is later seen in John Smith's A Journal of Impossible Things in the new series 2007 episode "Human Nature".
Doctor Who - 5th Doctor Titles
Doctor Who - 6th Doctor Titles
Doctor Who - 7th Doctor Titles