If we're talking "regular" TV series, the "ghost from Dundee's planet," episode of the Outer Limits (see the OL thread for more details).
If we're talking made for TV movies and mini-series, that vampire kid scratching at the window in the Tobe Hooper version of "Salem's Lot." Nothing.... NOTHING was/is ever as as scary as that.
If we're talking made for TV movies and mini-series, that vampire kid scratching at the window in the Tobe Hooper version of "Salem's Lot." Nothing.... NOTHING was/is ever as as scary as that.