They also have a few other, like voice talent and soundtrack. I heard the voice talent contained some major spoilers so I refrained from viewing that one, but the soundtrack one, I enjoyed; liked all the music they revealed.
They also have 2 character reveals that aren't that spoilery. One thing I hate, usually common to most of the videos, is the blood spatter on the characters' faces after a minor skirmish. They all look like psychotic beings straight out of FEAR.