30. The Second Doctor is Sentenced
From: "The War Games"
Premiere: April 19, 1969
The most ambitious epic that Doctor Who had attempted to date, and the last serial in black-and-white, "The War Games" ran for 10 episodes. The mad saga involved the War Lord (Philip Madoc), an alien commander building a super army with help from the War Chief (Edward Brayshaw), a renegade member of the Doctor's race – identified here for the first time as Time Lords. Patrick Troughton's Second Doctor wins the day, but at a grave cost: His Time Lord superiors force him to regenerate and banish him to Earth, and wipe the memories of companions Jamie McCrimmon (Frazer Hines) and Zoe Heriot (Wendy Padbury).