Doctor Who: Every Regeneration Ranked From Worst To Best
6. The Eleventh Doctor (The Time Of The Doctor)
As the youngest person to take on the role, it was rather ironic that Matt Smith's Eleventh Doctor died of old age.
After centuries of battle on the planet Trenzalore, the valiant defender finally wears out and dies, but not before Clara Oswald persuades the Time Lords to grant him a new regeneration cycle. This gets around the problem of the Doctor having used up his twelve regenerations prior to this point.
After returning to his younger self for a brief goodbye with Clara, the Doctor then sees visions of a young Amelia Pond - "the first face this face saw". An adult Amy then appears to guide him to his rest, before he quickly sneezes into Peter Capaldi.
The emotional farewell with Amy followed by the breakneck change to a new face is a really satisfying contrast, and is the most original NuWho regeneration so far.