This opening has a shadow of a tall man walking towards a little tan armchair in a spotlight and in a very clever effect, the man sits on the armchair. After the company name zooms in in red, the camera quickly zoomed up to the head of the shadow. A suspensful (yet grainy) theme plays while all this occurs.
This Opening Is Appeared On TVTropes Nightmare Fuel Vanity Plate Collection.
Pretty darn high, bordering on nightmare. The shadow, music and quick zoom can terrify first time viewers. But i think it's pretty clever and it fits, considering the company is called Armchair THRILLER.