Okay, knowing you are up to speed 'Scappy Doo. A couple of points
Escapay wrote:
Midnight - technically this doesn't air yet in the US until next Friday (and not this Friday due to Independence Day), but I already saw it. Reminds me of Monsters are Due on Maple Street, except confined to a shuttle bus and with a more depressing, but poignant, ending. And the Professor looks a lot like Second Doctor (then again, it is his son!). Maybe they can do a multi-Doctor story and get him to play Second Doctor!

I just wish we knew more about the monster/being/possessor that came into their shuttle, but that's probably just one of those unexplained phenomena that helps keep the mystery of Doctor Who. 8.5/10
In Midnight, the Doctor speculates that the "creature" is learning by its use of verbal copying. Of course, it moves on from copying later, and singles out The Doctor (presumably because his is the highest intellect) but as for the nature of the creature, do you think it was always "evil" or perhaps its demands at the end for The Doctor to be thrown out were the result of it "learning" fear, mistrust, paranoia etc from the human's on the shuttle? Or am I just over-analysing the episode?
As I said before, Midnight feels to me like an old school X-Files "monster of the week" episode, and like the X-Files before it, it does somewhat suffer from lack of coherent explanation at the end. However, unlike one of my common complaints, this ending felt in no way rushed or logically forced.
Turn Left/The Stolen Earth/Journey's End - I've seen Turn Left, but I'm still processing it, along with The Stolen Earth (that cliffhanger had me shocked and my jaw just dropped. I'd have yelled "OH MY GOD!" if it wasn't 2 in the morning!). I don't think I'll be able to make an assessment until I've seen Journey's End. But I really loved "Turn Left" and its alternative "no-Doctor" world. And Donna's sacrifice was...well, worth it. It's going to pain me even more when she parts from the Doctor at the end of the series. And Harriet Jones, Former Prime Minister...godspeed.
"…And yet you know nothing of humanity, and that will be your downfall."
- Harriet Jones [2005-2008]
For me, Turn Left emphasises THE most common theme of New Who – that the Doctor, through interaction with others, makes them better people. While this was perhaps strongest with the Eccleston Doctor (really, if you watch his stories he physically does very little, but inspires those around him, be they Dickens, Cathica or Pete Tyler (and of course Captain Jack) to be more honest, noble and heroic. As Rose says in The Parting of the Ways, the Doctor shows people there is a "better way".
Turn Left shows how much the Doctor's "chance" [?] meeting with Donna in the Runaway Bride led to and helped Donna realise her true potential. And that's why I have major issues with some people who claim Donna is not the same Donna who was in the Runaway Bride – that's the whole point of Donna coming back IMO. Was the Jackie of Love & Monsters when she confronts Elton the same Jackie from Rose who saw the Hendricks' explosion as an opportunity for a quick buck? Was the Captain Jack who sacrificed his life protecting the Doctor from the Daleks in The Parting of the Ways the same Captain Jack as was first seen in The Empty Child (who let's not forget was an intergalactic scam artist)?
In Turn Left, it should be noted Rose plays a very Doctor-ish role (not one that I feel suits her to be honest), but she has the same effect on Donna as the Doctor did. Rose makes Donna a better person. A person who will, ultimately make the supreme sacrifice.
Another thing to note about Turn Left is how well Catherine Tate plays the entire episode. I can't believe there were (and still are) people complaining about her! Look at both of the scenes inside the circle of mirrors. No companion, but no companion, could play those scenes as well as Catherine did. You really feel for her both times, especially the latter just before she vanishes. You can pinpoint the exact moment all her faith and building optimism leaves her as she hears Rose's soul crushing reply.
But also how to a greater extent, Turn Left is about how the Doctor has helped the whole of Britain (the World?) become "better people". The scenes with the Italian family being taken away by the British authorities and taken to "labour camps" work so well because not only does it show how much better "life" is with a Doctor, even if he doesn't personally inspire each and every individual.
While The Stolen Earth gave me multiple Whogasms (especially Daleks in the Torchwood Hub!) and
the incident in the last couple of minutes, its clearly Turn Left that is the highlight of this series (so far!) – the 65 minute Journey's End promises much (perhaps too much?)