I LOVED the scene with the cake.
Usually I *hate* 'embarrassing' humour, but this wasn't, because the Doctor was just... himself. (And I'm wondering WHY he decided to burst out of a cake, but well he's an alien. I'm sure it made sense to him!) *g*

And as a casual viewer, this was the first episode with Eleven that I found myself really, really liking, instead of just watching.
Oh that pleases me immensely! The fans will watch and complain/squee, but it's the casual viewers that really determine whether something works. :)