The fourth day is here! We are halfway through the Eat Your Comics 8 Days of Who Countdown. This coming Saturday , the BBC will finally air series 8 of Doctor Who to us, the geeks who waited.

Today, A Good Man Goes to War in our list of episodes of re-watchable, influential, and all around cool episodes of Doctor Who that are worth a revisit before the premier.

Episode: A Good Man Goes to War (Series 6, Episode 7)

Written by: Steven Moffat

Air date: 4 June 2011

IMDB Synopsis: Amy now has a baby, but she and Melody are held captive in the season finale by panto-style villain Madame Kovarian (Frances Barber) and the Doctor is raising an army to rescue her as the drama continues. But as he and Rory race across galaxies, calling in long-held debts and solemnly given promises, his enemies are laying a carefully concealed trap.

In her cell in Stormcage, River Song sadly acknowledges that the time has come at last today will mark the Battle of Demons Run and the Doctors darkest hour. Both sides will make their sacrifices and River Song must finally reveal her most closely guarded secret to the Doctor.

Why this episode is important:

In series 6, Matt Smith is the Doctor: a floppy, silly, cool regeneration. By this point in his reign at the helm of the TARDIS, we have met some strange aliens along his travels and in War, a few of them come back to repay a debt to him.

By this time, throughout a few episodes, we've seen someone popping in on Amy, and this is the episode we find out why. Excruciating pain strikes Amy, and the Doctor explains that she is going into labor. She wakes up to see the same, eye patched lady gazing down at her. The Amy that's been along with the Doctor and Rory is actually a flesh copy that her conscious has been able to inhabit, but she had really all along been on Demon's Run. She delivers a girl, Melody, and the Doctor and Rory (who in this episode is The Last Centurion, and a total and complete badass) are racing to find them.

The Doctor calls in debts from aliens we've met over the seasons, and brings them together for the battle of Demon's Run, which Rory desperately tries to recruit River for, but she can not go.

This episode is so fun to watch: from the multiple characters coming back for a battle to the final reveal of who River is to the Doctor. It's something that can only be a Moffat story-line with the twists in plot and bread crumbs along the way to the final scenes. No matter how many times I watch this one, I get chills when River can finally spill the beans to Amy, Rory and the Doctor as to who she really is. Matt Smith is a joy to watch in this scene, his emotional range is all over the place and it's perfect.

down pieces, here it's just all respect for the guy's story-lines today. This episode is the perfect example of how complicated, wonderful and emotional his scripts can be. He keeps River's spoilers from us so well throughout his other episodes, that when they are finally revealed it is so worth the wait. As much as I joke about Moffat being a character killer in our day 6 and day 5 countdown pieces, here it's just all respect for the guy's story-lines today. This episode is the perfect example of how complicated, wonderful and emotional his scripts can be. He keeps River's spoilers from us so well throughout his other episodes, that when they are finally revealed it is so worth the wait.

Memorable Quotes:

Commander Strax: I hope someday to meet you in glory of battle where I will crush the life from your worthless human form. Try and get some rest.

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Amy Pond: [Baby Melody is crying] She doesn't like the TARDIS noise. I asked him to turn something off but it was all “I don't want to punch a hole in the space-time continuum”.

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The Doctor: [talking to Amy's newborn daughter] It's okay. She's still all yours. And really, you should call her Mummy, not Big Milk Thing.

Amy Pond: Okay, what are you doing?

The Doctor: I speak Baby.

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Amy Pond: A crying Roman with a baby – definitely cool.

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Demons run when a good man goes to war. Night will fall and drown the sun when a good man goes to war. Friendship dies and true love lies. Night will fall and the dark will rise when a good man goes to war. Demons run but count the cost; the battle's won but the child is lost.