I thought last nights was pretty good, even with the Corden factor. He's actually a decent actor who got his start in the West End in History Boys and he showed some of that last night. He was fairly subdued and quiet and was basically the straight man to Smith's zany comedy turn.
I believe this was the inevitable 'box' episode they have every season, the one that is done really cheaply so they can save their effects and production budget for the big finale. I liked how it was basically a sitcom episode and how the Doctor would react to that, thought it was quite amusing all round. Smith is great and his comedy timing is impeccable, "It's a commentary on modern society. Ooh, modern society, isn't it awful?" had me laughing out loud. The rest of it was pretty meh though, like lame non-bad guy, the 'use your love to save the day' bit seemed like the worst of the RTD stuff was back and yet more perception filters being used as deus ex machina's.
Next week's is the first of the two part finale and it seems like every enemy from the new series is brought back for some sort of giant Monster Mash, it could be amazing. Does anyone else think it's the Doctor himself in that box? "the trickster" and why all of them baddies would be there.