I thought it was pleanty scary. It wasn't the content so much, but the fact that it set me at ease, then switched gears both visually and audibly. My brain couldn't keep up with the switch, and it freaked me out. In fact, I couldn't even describe the picture after I saw it. I'm not sure how it could fail to at least startle someone, but then again, I didn't read any of this thread before watching it, and had no idea what to expect. I'm certainly not ashamed to say that it scared the crap outta me.
-Sikboy