Patrick Macnee (1922-2015)

Patrick Macnee passed away at the age of 93. He is better known as John Steed than as the voice of the Cylon Leader in 13 episodes of Battlestar Galactica (1978-1979), but it can be argued that The Avengers bordered on SF/F, and sometimes slipped right over into it.  I remember some rather fantastic scenes!

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http://www.bbc.com/news/uk-33279566