Damn the Torches and Full Speed Ahead
I have several quibbles with the list concerning the definition of what is a science fiction horror film. While I love Forbidden Planet and The Day the Earth Stood Still and the films have some scary moments; they are not horror movies.
I propose we remove those films from the list and substitute these entries:
Godzilla
The Quatermass Xperiment
Both feature icons, the giant nuclear powered critter and the cold determined scientist determined to experiment results be damned.