Alan Turing Documentaries To celebrate Alan Turing 100th birthday, I want to watch a documentary about his life.  However, there are several documentaries to choose from.
Which documentary about Alan Turing is your favorite?
Please include only one documentary per answer.
a leading one is Codebreaker with a list of reviews/publicity here [unfortunately several are behind paywalls]. here is one web review by chris harvey &amp; with quotes by the writer warner.

this documentary originated by channel 4 seems balanced and avoids hagiography, looking at all the aspects of his complex life. has award winning writer, actors and acclaimed producer.