Brian: Of course. What sort of a man doesn't carry a trowel? Put it on your Christmas list.
Rory: Dad, I'm 31. I don't have a Christmas list anymore.
Doctor: [From afar] I do!
After last week's intense, emotional episode, it was wonderful to reunite with the Ponds for a madcap frolic. And due to a materialization mistiming, we got to bring along Rory's dad Brian too! Just let me gush about him for a bit. The picture is from the end, where Brian is sitting in the doorway, looking down at Earth and eating a sandwich. He is just absolutely adorkable and I wish he'd meet up with Wilf. Even better if Wilf comes back--but that would be great.
As for the adventure itself, a great frolic, nice break from the intensive plot arc of last season. It reminds of some of the classic episodes--Third Doctor, perhaps-- in the best possible ways. You have one small ship and an enemy, that's all.
As for the moment at the end, with Solomon's fate, I think it will tie in with what Amy says in the trailer--"This is what happens when you travel alone too long." What is known as "Time Lord Victorious" will grow and become impossible to suppress, until something very big happens to snap him out of it.