WHO'S NEXT? We go back 50 years to look at Patrick Troughton's final hurrah as Doctor Who before regenerating to usher in Jon Pertwee's tenure as the Time Lord.
THE War Games saw everyone's favourite Time Lord facing a daunting challenge - the combined military forces from every era of Earth's history. The soldiers had been gathered together and brainwashed by aliens intent on using them to take over the galaxy.
The BBC's gripping sci-fi adventure marked the last appearance of Patrick Troughton as Doctor Who, with his final episode being broadcast on June 21, 1969.
Patrick It was also the last time the series was broadcast in black and white and saw the recorderplaying Doctor being sentenced by his fellow Time Lords to exile on Earth ... with a new face to go with his new life.
The regeneration scene marked the end of Patrick Troughton's three-year stint as the second Doctor after taking over from William Hartnell in 1966.
"I thought it would last about six weeks after Billy Hartnell had finished," he later said. "My children and I had been fans of the programme and I loved the way he had played the Doctor. But I knew I couldn't possibly do it like that."
Instead, he offered a wonderfully flamboyant and eccentric Time Lord who also had a child-like interest in everything he encountered.
Patrick sadly died in 1987 at age of 67, while attending a science convention in America, but once of his famous role "Doctor Who gave me a chance to indulge my passion for dressing up and being able to have some sly fun as well as a bit of clowning".
Many of his Time Lord adventures have been lost over the years, but some of the missing Doctor Who episodes are now being brought back using animation.
Lost instalments of his appearance in The Faceless Ones serial from 1967 are among those being reconstructed by animators in high definition and colour.
Only two of the six episodes about identity-stealing aliens known as the Chameleons still survive in their original form in the BBC archives, but all six animated chapters are due to be released on DVD and Blu-ray next year.
I loved the way he had played the Doctor. But I knew I couldn't possibly do it like that Patrick Troughton on his predecessor in the role of Doctor Who, William Hartnell
Patrick Troughton filming in Snowdonia with two off-duty Yeti monsters in 1967