13. The Husbands of River Song
The Husbands of River Song is a very strange episode of Doctor Who. Following the Doctor and River running from a headless robot through space, the episode was very strange and very original. Completely different in tone to the previous Christmas special, Last Christmas, this episode was full of jokes and fun. Many people hated it, thinking that it was too light-hearted and story was appalling, but I thought that, as it is the first jokey episode of Doctor Who since The Girl Who Died, this made for an excellent piece of comedy.
The ending of the episode was the part of it that reached the most success. With the Doctor taking River Song to the Singing Towers of Garillium for their last dinner together, the Doctor ended up crying because he knew what was in store for River Song next: her death. (I will probably be doing a post about River Song's complete timeline now that her story is complete).
This episode was overall a very well-done masterpiece, with a lot of humour and jokes. And, with the ending being so heartbreaking, this episode will go down as one of the best Christmas specials of Doctor Who yet.
Score: 8.5/10
12. Sleep No More
Sleep No More was the 10th and worst episode of Series 9. This is because the story was a bit dull in places and had quite an unsatisfying ending. However, except for these few flaws, this episode was brilliant.
Full of outrageous action, brilliant effects and creepy monsters that are grounded into realism, this episode is the only episode of New Who so far which has been entirely told as a Found-Footage. The way the cameras are used are brilliant, and when an explanation for the camera's existence is given, it is both extremely smart and very confusing.
The final scene with the scientist telling the story turning out to be one of the nefarious Sandmen is by far the best scene in the whole episode. Giving us a very creepy view of what life would be like if the Sandmen ruled the earth, also seemingly setting up the return of the Sandmen.
The episode was a very creepy and very good one, but was the worst of the series, mainly because it didn't seem to fit into the series as a whole. However, except for that, this episode was very, very good.
Score: 9/10
11. Before the Flood
Before the Flood, the 4th episode of the series is also one of the worst. However, it is not bad. It is a brilliantly-told story, let down only by the effects and the main villain having next-to-nothing to do for the whole episode.
The last episode left off with the Doctor's ghost revealing itself to Clara and her friends. The Doctor and his friends had gone back in time to solve the mystery of why the ghosts existed and who was creating them in the first place. The episode used the idea of having one time zone affect another brilliantly, having the ghosts of people who died in the past appearing in the future. The episode also focused a lot more on the Doctor, as he tried to come to terms with the fact that he had to die to save his friends in the past.
The way the episode was done was also brilliant, especially the scene where one of the ghosts is dragging an axe along the floor behind his to-be victim who is deaf. The effects are widely varying, as the ghosts completely authentic and creepy, while the Fisher King being pushed away by the flood does not.
Overall, this episode is let down by the SFX and its villain the Fisher King. However, except for that, this episode is really a massive achievement by the BBC.
Score: 9/10
10. The Woman Who Lived
A very strange episode of Doctor Who, The Woman Who Lived is an episode of Doctor Who with very little action and a lot of talking. Written by Torchwood writer Catherine Tregenna, this episode was accepted by many as brilliant and by others as absolute rubbish. I am one of the former. I believe that this episode puts across very well the torment that Ashildr, or Lady Me as she calls herself in this episode, feels. This episode puts a lot of pain and realism into immortal life.
The story of the Lion King Leandro is not a good one, and is one of the worst monster stories of all time for Doctor Who. However, that can be put aside for the brilliance the rest of the episode shows, e.g. the interaction between the Doctor and Lady Me.
I highly recommend the book The Legends of Ashildr, a short story collection about Ashildr's long life. It really shows the pain of Ashildr's life, and makes this episode feel a lot more real and personal.
This episode is a brilliant one and really gives a sense of adventure and excitement, while also making for a sad and personal episode.
Score: 9/10
That's all from me now, but Part 2 will be up tomorrow and part 3 on 2nd January 2016. Thank you for reading and have a happy new year.
This creature is probably going to be called the Veil, a creature we know will be in an episode. As the Doctor describes it, the monster seems to be following him, hunting him. It is slow, but it never stops. In the trailer, the Doctor seems to be almost afraid of it...and the Doctor's not supposed to be afraid of anything. This creature must be powerful, and also very creepy, if the Doctor is going to be scared of it himself.
The Doctor is also going to be very angry and regretful about Clara's death and the events of the previous episode, and he will probably channel this anger into his plans of escape. 
The Pandorica Opens is amazing for one reason...it has everything in it. Romans, Stonehenge, River Song, Cybermen heads with killer tentacles, Daleks, creepy houses, a prison for the doctor...it just has everything.
The Stolen Earth is the penultimate episode of Series 4 and, just like the Pandorica Opens, features everything. But this time, it's returning heroes...not villains.
The Waters of Mars is the 3rd of the five specials of Series 4. This episode is one of the scariest episodes of New Who, and makes the viewer temporarily scared of water itself.
Last Christmas is the 2014 Christmas Special, and sees the Doctor and Clara face Dream Crabs, creatures that eat your face while you are in a perpetual dream. The episode introduces another one of the creepiest Doctor Who monsters (Dream Crabs) and also introduces Doctor Who's version of Santa, played by Nick Frost.
Face the Raven was the most recent episode of Doctor Who broadcast...and the best. Starting with your average Doctor Who plot of a mysterious tattoo on the back of Rigsy's neck...which turned out to be a countdown to his death. However, as the tale continued it featured some twists...such as Clara taking the tattoo from Rigsy and the return of Ishildr (a.k.a Lady Me). 
In the Forest of the Night was the 10th episode of the series. It had a strange plot, as the Doctor landed on Earth only to find it was covered in a massive forest. He teams up with Clara, Danny Pink and a little girl called Maebh to stop the supposedly evil trees, but find out that the trees are actually good guys, saving the earth from a giant solar flare.
Robot of Sherwood was the 3rd episode of the series. It saw the Doctor and Clara travel to Nottingham 1190 and meet the legendary Robin Hood and his Merry Men. They are forced to face Robots and the Sheriff of Nottingham, and the overarching plot of Season 8, of Heaven and Missy, is also continued in brave fashion.
Into the Dalek was the second episode of Series 8. It featured a plot based on the classic sci-fi film Fantastic Voyage where scientists shrink themselves and then go inside a human body. However this time, the Doctor, Clara and a small taskforce must go inside a Dalek to cure the dying creature, which strangely declares that it must slaughter its own kind: Daleks.
Kill the Moon was the 7th episode of Series 8, and one of the worst. This episode has sparked a lot of debate among fans; some have loved it, some of hated it. For me, it is middling. Featuring a strange plot about the moon being an egg containing a space-dragon-thing, and giant alien spiders being the egg's bacteria, the episode also saw schoolgirl Courtney come along for the ride, like Angie and Artie in Nightmare in Silver.
Time Heist is the 5th episode of Series 8. It sees the Doctor, Clara, a cyborg called Psi and a shapeshifter called Saibra unknowingly agree to rob the most secure bank in the universe. With a telepathic creature called the Teller hunting them through the deepest vaults of Bank Karabraxos, a creature that can read your thoughts and suck your brains out through your skull.
Mummy on the Orient Express is the eight episode of Series 8. It sees the Doctor and Clara land on the Orient Express, a train flying in space, but find out that the passengers are being plagued by a mummy-like creature called the Foretold, which targets people and then gives them 66 seconds to live.
The Caretaker is the sixth episode of Series 8, following the events of Time Heist. It sees the Doctor go undercover as a caretaker at Coal Hill School, where Clara works. It also documents the first meeting between the Doctor and Danny Pink, and an old school robot creature called the Skovox Blitzer trying to destroy the world to get back to its own.
Flatline is the ninth episode of Series 8, following Mummy in the Orient Express. The episode saw the Doctor get stuck in a shrunken-down TARDIS. Clara then teams up with a graffiti artist called Rigsy and a crew of construction workers to face 2D creatures known only as "The Boneless".
Deep Breath is the first episode of Series 8, and one of the best. It features Peter Capaldi in his first, full-length episode of Doctor Who (having first appeared in 2013's Day of the Doctor) and also features the return of the Patternoster Gang (Madame Vastra, Jenny, Strax).
Listen is the fourth episode of Series 8. Written by Steven Moffat (Blink, Silence in the Library, A Good Man Goes to War), this episode is about the Doctor answering the question "Are we ever alone?"
Dark Water is the penultimate episode of the series, and the penultimate episode on this list. The episode saw Danny Pink die, the Doctor and Clara travel to a place called Heaven, the Cybermen return, and Missy reveals herself as the Mistress: "Well, I couldn't keep calling myself the Master, now, could I?"
And taking top spot is the finale of the series, Death in Heaven. A 60-minute long episode, this episode is the best episode of the series. Carrying on from the gripping cliffhanger of the previous episode, the episode saw the dead rise from their graves as Cybermen, the Doctor become world leader and the return of Kate Stewart, Osgood and the entirety of UNIT. The episode was touching, moving, scary, dark and, most of all, action-packed.