Earliest cinema memory is
The Little Mermaid (1989, making me 6) - remember being scared of the octopus woman baddie. Later had her as a bath toy from a Happy Meal...
Another one was
Home Alone - an older friend I was with convinced me we had gone into
Arachnophobia by mistake, having seen me get creeped out by the poster as we queued to get in
. . .