Honorable MentionsFirstly, I'd like to kick off with some good ones that just weren't good enough to get on the list:
5. The Runaway Bride (2006)
|The Racnoss attacks Central London|
The threat in this episode was also great. The Racnoss, brilliantly played by Sarah Parish, was menacing, while the Robot Santas were a good but completely separate addition which seemed to only be used for a few bangs at the party.
4. The Next Doctor (2008)
|The Cybermen convert Miss Hartigan|
against their agreement
However, the thing that made this episode was the start of the lead up to Tennant's departure. Here, we see the Tenth Doctor face up to the fact that he will regenerate some day when he meets someone who appears to be his future regeneration. It's great to see how the Doctor is reacting to his future regeneration, even though he doesn't know how imminent it is.
3. The Snowmen (2012)
|The Snowmen advance upon the|
Doctor and Clara
The return of the Great Intelligence was unexpected and brilliantly done, with this episode becoming a prequel to The Web of Fear with the nod to the London Underground. The Snowmen were also great as it took something Christmassy and turned it into a threat. Also, the death of Clara showed that these old enemies still packed a punch by killing ruthlessly.
2. Voyage of the Damned (2007)
|The Doctor and his friends battle the|
Host on an unstable bridge
Once again, the idea of taking a traditional Christmassy thing and turning it into a threat is brilliantly done, this time using angels. The Heavenly Host are ruthless killers despite being deceivingly helpful in earlier episodes. The imminent collision of the Titanic with Central London is also well done, with News Reports and cut scenes to what is happening on Earth at the time.
1. Time of the Doctor (2013)The Eleventh Doctor's finale was a brilliant episode. Matt and Jenna's chemistry was brilliant and they both gave an emotional and impactful performance. I also liked the way the story brought together all of the story arcs, even though they had seemingly been resolved, and didn't fully resolve them, but gave them a regeneration of sorts, allowing them to carry forward into the Twelfth Doctor's era.
|The Doctor's greatest enemies assemble|
around the planet Trenzalore
However, this episode, along with the 50th Anniversary, are absolutely pivotal in the direction of the entire show. The 50th toyed with the idea of Gallifrey still existing, with this episode confirming that it exists. Also, the show's lifetime is extended within the story of this episode, with the Doctor being given a new cycle of regenerations.