I've never understood what was so frightening about that one Screen Gems logo. When I finally saw it a few years ago after reading a different 'scary closing logo' thread elsewhere, I just did not see the big deal. All right, the background music is a bit annoying, but otherwise, not at all scary to me.
On the other hand, as a kid, Viacom's V of Doom was pretty uncomfortable to deal with. And then I started to notice a lot of local TV stations would cut off the V of Doom halfway through and immediately go to commercials. I used to wonder if people working in television were doing that on purpose, not because management wanted to put in one more advertisement before the next show, but because they were either sick of, or were still frightened by the V of Doom.