I've seen that first one before, and I didn't get a nice warning like that either the first time. Great idea that's really well programmed/executed tho.
Not as horrifying as going in with no idea that its created in a way that's designed to make you jump, 'cos your expecting it - Totally takes the edge off.
I mean clearly you look and you see/assume horror comic, yes; but then stuff moves and makes noise, yeah, unexpected that ain't nice. :]