Kyubey is the most evil magical pet I have ever seen. He looked sinister with his blank face while he talked with Madoka. I am certainly hoping he has an ulterior motive, one that is not redeemable by some more benevolent goal behind it.
I think it is now unfair to say that this is great for a mahou shoujo. I am sure it has already gone beyond that with this episode. This is just awesome, period.
What is it with this director and head snapping? Hitagi did it, characters in Zetsubou sensei did it, and now Homura did it. Does he have a fetish for twisting girls' necks in a weird angle?
EDIT: One thing I noticed about the jarring contrast between the slice of life elements and darker parts of this show is that it owes a large part of it to the art style. The art is the same style used in Hidamari Sketch, which is one of the most light hearted and relaxing shows ever, then they use that character design and get a senpai's head gobbled off. Yeah, jarring.