Gawd, Sleep No More was bad.
Did ANYONE like that episode?
Mark Gatiss, maybe?
Anyway, Hell Bent was superb. I had a lot of mixed feelings on my first watch, but I watched it again this morning and it really comes together very nicely. The way the Hybrid storyline was resolved was superb and while the whole Clara thing did feel weird, it really was a proper end to her arc.
I must say, I don't think I've ever enjoyed a Doctor/companion relationship as much as I have enjoyed Doctor/Clara in Season 9. It was a little wobbly in Season 8, but this season knocked it out of the park.
1. Heaven Sent/Hell Bent
2. The Zygon Invasion/The Zygon Inversion
3. Face the Raven
4. Under the Lake/Before the Flood
5. The Magician's Apprentice/The Witch's Familiar
6. The Girl Who Died/The Woman Who Lived
7. Sleep No More
Also, preliminary season ranking:
9
5
8
7
4
1
6
3
2
EDIT: As I thought, pretty much the entire internet says that this episode sucked because it brought Clara back and shows that nobody actually dies on the show.
Oh well, their loss. I liked it.