Got a few issues with some of your films... I liked Titanic and Moulin Rouge, and (ignoring the airbrushed view of prostitution) Pretty Woman but wouldn't necessarily say they're essential viewing. I think that some of Meg Ryan's romantic films - When Harry Met Sally, Sleepless in Seattle - are more powerful and moving.
The Scream trilogy? Pretty unnecessarily nasty and brutish at times IMO. If I had to pick a horror film/psychological thriller, there's lots I'd pick before that (Jaws, Alien, The Fog, The Shining, Psycho, The Howling, The Thing, Rosemary's Baby, Omen, Omen II: Damien, Halloween etc)
Love Actually...? Very patchy, with a number of very weak stories within its patchwork (e.g. the brit kid going to America, Martin Freeman's bit, even Hugh Grant's seemed underwritten). Were Four Weddings and Notting Hill not better Richard Curtis films?
Each to their own I guess...