They do a good line in creepifying, indeed.
Would work better if they played in order, instead of running the ending first.
That's the order they were originally "leaked".
"Out of context ending/cliffhanger situation followed by context, climax" was Joss Whedon's favorite way of structuring Firefly episodes.
I can see why you would think that. Many people, myself included, wouldn't agree.
It makes more sense if you already have some of the backstory. If you've never watched firefly then you really don't get much of the creep factor at all.
I'm gonna make this pen disappear.
Is that Joss Whedon's voice as the interviewer?
Yes, and I think that's him in the scene too.