Marcie's death with the axe. That was a gruesome and well-made scene for 1980.

Yes it was. But if you saw the uncut version in the last 10+ years on DVD or bluray, you saw more of it than audiences did in 1980. I wish they could release uncut versions of all the films.

The genius of Tom Savini.

I've just rewatched F13 (first time on Blu-ray). That axe to the face holds up really well.